\n\t\t\n<\/span>\n\t<\/p>\n\n\t\t\n<\/span>\n\t<\/p>\n\n\t\tclear; clc; close all<\/span>;<\/span>\n\t<\/p>\n\n\t<\/div>\n\n\t\t%% \u53c2\u6570\u8bbe\u7f6e<\/span><\/span>\n\t<\/div>\n\n\t\ttMax = 300000; % \u6a21\u62df\u65f6\u95f4\u6b65\u6570<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tKs=[5000 5000]; <\/span>\n\t<\/div>\n\n\t\tKb=[500,500];<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tNnodes=[30 40];<\/span>\n\t<\/div>\n\n\t\tNfila=length(Ks);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tdt=0.01;<\/span>\n\t<\/div>\n\n\t\tU=cell(1,Nfila); V=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFx=cell(1,Nfila); Fy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFsx=cell(1,Nfila); Fsy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFbx=cell(1,Nfila); Fby=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tDisL=cell(1,Nfila); DisR=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tdis2=@(x1,y1,x2,y2) sqrt((x1-x2).^2 + (y1-y2).^2);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Rcx{i}=zeros(Nnodes(i),1)+(i-1.5)*40;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}=[0:Nnodes(i)-1]';<\/span>\n\t<\/div>\n\n\t\t U{i}=Rcx{i}*0; V{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t DisL{i}=Rcx{i}*0; DisR{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor<\/span> j=1:tMax<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t%% \u8ba1\u7b97\u62c9\u529b,\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t %\u62c9\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=2:Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t disL{i}(n)=dis2(Rcx{i}(n-1),Rcy{i}(n-1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t disR{i}(n)=dis2(Rcx{i}(n+1),Rcy{i}(n+1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t n=Nnodes(i);<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcx{i}(n-1)-Rcx{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcy{i}(n-1)-Rcy{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t n=1;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcx{i}(n+1)-Rcx{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcy{i}(n+1)-Rcy{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=1:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t if <\/span>n>=3 && n<=Nnodes(i)-2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n-2)-4*Rcx{i}(n-1)+6*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n-2)-4*Rcy{i}(n-1)+6*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n+2)-2*Rcx{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n+2)-2*Rcy{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n-2)-2*Rcx{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n-2)-2*Rcy{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n-1)+5*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n-1)+5*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n+1)+5*Rcx{i}(n)-4*Rcx{i}(n-1)+Rcx{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n+1)+5*Rcy{i}(n)-4*Rcy{i}(n-1)+Rcy{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %% \u4f4d\u7f6e\u66f4\u65b0 <\/span><\/span>\n\t<\/div>\n\n\t\t <\/span>\n\t<\/div>\n\n\t\t for <\/span>n=3:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t % Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.01*U{i}(n)+0.01*sin(2*pi*j\/13000);<\/span><\/span>\n\t<\/div>\n\n\t\t Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.02*U{i}(n);%+0.005*sin(2*pi*j\/(30000));<\/span><\/span>\n\t<\/div>\n\n\t\t Fy{i}(n)=Fsy{i}(n)+Fby{i}(n)-0.02*V{i}(n);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fx{i}(Nnodes(i))=Fx{i}(Nnodes(i))+0.4*((sin(2*pi*j\/10000)>0)-0.5);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t U{i}(n)=U{i}(n)+Fx{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t V{i}(n)=V{i}(n)+Fy{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcx{i}(n)=Rcx{i}(n)+U{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}(n)=Rcy{i}(n)+V{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\tif <\/span>mod(j,200)==0<\/span>\n\t<\/div>\n\n\t\tclf <\/span>\n\t<\/div>\n\n\t\tclc<\/span>\n\t<\/div>\n\n\t\tj<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\taxis([-100 100,0 100])<\/span>\n\t<\/div>\n\n\t\tset(gcf,'Color'<\/span>,[0.8 0.8 0.8])<\/span>\n\t<\/div>\n\n\t\thold on<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t
\n\t\t\n<\/span>\n\t<\/p>\n\n\t\tclear; clc; close all<\/span>;<\/span>\n\t<\/p>\n\n\t<\/div>\n\n\t\t%% \u53c2\u6570\u8bbe\u7f6e<\/span><\/span>\n\t<\/div>\n\n\t\ttMax = 300000; % \u6a21\u62df\u65f6\u95f4\u6b65\u6570<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tKs=[5000 5000]; <\/span>\n\t<\/div>\n\n\t\tKb=[500,500];<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tNnodes=[30 40];<\/span>\n\t<\/div>\n\n\t\tNfila=length(Ks);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tdt=0.01;<\/span>\n\t<\/div>\n\n\t\tU=cell(1,Nfila); V=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFx=cell(1,Nfila); Fy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFsx=cell(1,Nfila); Fsy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFbx=cell(1,Nfila); Fby=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tDisL=cell(1,Nfila); DisR=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tdis2=@(x1,y1,x2,y2) sqrt((x1-x2).^2 + (y1-y2).^2);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Rcx{i}=zeros(Nnodes(i),1)+(i-1.5)*40;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}=[0:Nnodes(i)-1]';<\/span>\n\t<\/div>\n\n\t\t U{i}=Rcx{i}*0; V{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t DisL{i}=Rcx{i}*0; DisR{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor<\/span> j=1:tMax<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t%% \u8ba1\u7b97\u62c9\u529b,\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t %\u62c9\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=2:Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t disL{i}(n)=dis2(Rcx{i}(n-1),Rcy{i}(n-1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t disR{i}(n)=dis2(Rcx{i}(n+1),Rcy{i}(n+1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t n=Nnodes(i);<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcx{i}(n-1)-Rcx{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcy{i}(n-1)-Rcy{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t n=1;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcx{i}(n+1)-Rcx{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcy{i}(n+1)-Rcy{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=1:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t if <\/span>n>=3 && n<=Nnodes(i)-2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n-2)-4*Rcx{i}(n-1)+6*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n-2)-4*Rcy{i}(n-1)+6*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n+2)-2*Rcx{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n+2)-2*Rcy{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n-2)-2*Rcx{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n-2)-2*Rcy{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n-1)+5*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n-1)+5*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n+1)+5*Rcx{i}(n)-4*Rcx{i}(n-1)+Rcx{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n+1)+5*Rcy{i}(n)-4*Rcy{i}(n-1)+Rcy{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %% \u4f4d\u7f6e\u66f4\u65b0 <\/span><\/span>\n\t<\/div>\n\n\t\t <\/span>\n\t<\/div>\n\n\t\t for <\/span>n=3:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t % Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.01*U{i}(n)+0.01*sin(2*pi*j\/13000);<\/span><\/span>\n\t<\/div>\n\n\t\t Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.02*U{i}(n);%+0.005*sin(2*pi*j\/(30000));<\/span><\/span>\n\t<\/div>\n\n\t\t Fy{i}(n)=Fsy{i}(n)+Fby{i}(n)-0.02*V{i}(n);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fx{i}(Nnodes(i))=Fx{i}(Nnodes(i))+0.4*((sin(2*pi*j\/10000)>0)-0.5);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t U{i}(n)=U{i}(n)+Fx{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t V{i}(n)=V{i}(n)+Fy{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcx{i}(n)=Rcx{i}(n)+U{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}(n)=Rcy{i}(n)+V{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\tif <\/span>mod(j,200)==0<\/span>\n\t<\/div>\n\n\t\tclf <\/span>\n\t<\/div>\n\n\t\tclc<\/span>\n\t<\/div>\n\n\t\tj<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\taxis([-100 100,0 100])<\/span>\n\t<\/div>\n\n\t\tset(gcf,'Color'<\/span>,[0.8 0.8 0.8])<\/span>\n\t<\/div>\n\n\t\thold on<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t
\n\t\tclear; clc; close all<\/span>;<\/span>\n\t<\/p>\n\n\t<\/div>\n\n\t\t%% \u53c2\u6570\u8bbe\u7f6e<\/span><\/span>\n\t<\/div>\n\n\t\ttMax = 300000; % \u6a21\u62df\u65f6\u95f4\u6b65\u6570<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tKs=[5000 5000]; <\/span>\n\t<\/div>\n\n\t\tKb=[500,500];<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tNnodes=[30 40];<\/span>\n\t<\/div>\n\n\t\tNfila=length(Ks);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tdt=0.01;<\/span>\n\t<\/div>\n\n\t\tU=cell(1,Nfila); V=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFx=cell(1,Nfila); Fy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFsx=cell(1,Nfila); Fsy=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tFbx=cell(1,Nfila); Fby=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tDisL=cell(1,Nfila); DisR=cell(1,Nfila);<\/span>\n\t<\/div>\n\n\t\tdis2=@(x1,y1,x2,y2) sqrt((x1-x2).^2 + (y1-y2).^2);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Rcx{i}=zeros(Nnodes(i),1)+(i-1.5)*40;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}=[0:Nnodes(i)-1]';<\/span>\n\t<\/div>\n\n\t\t U{i}=Rcx{i}*0; V{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t DisL{i}=Rcx{i}*0; DisR{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor<\/span> j=1:tMax<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t%% \u8ba1\u7b97\u62c9\u529b,\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t Fsx{i}=Rcx{i}*0; Fsy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fbx{i}=Rcx{i}*0; Fby{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\t Fx{i}=Rcx{i}*0; Fy{i}=Rcy{i}*0;<\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t %\u62c9\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=2:Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t disL{i}(n)=dis2(Rcx{i}(n-1),Rcy{i}(n-1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t disR{i}(n)=dis2(Rcx{i}(n+1),Rcy{i}(n+1),Rcx{i}(n),Rcy{i}(n));<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcx{i}(n)-Rcx{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)= -Ks(i)*(disL{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n-1))\/disL{i}(n)+...<\/span><\/span>\n\t<\/div>\n\n\t\t -Ks(i)*(disR{i}(n)-1)*(Rcy{i}(n)-Rcy{i}(n+1))\/disR{i}(n);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t n=Nnodes(i);<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcx{i}(n-1)-Rcx{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disR{i}(n-1)-1)*(Rcy{i}(n-1)-Rcy{i}(n))\/disR{i}(n-1);<\/span>\n\t<\/div>\n\n\t\t n=1;<\/span>\n\t<\/div>\n\n\t\t Fsx{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcx{i}(n+1)-Rcx{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t\t Fsy{i}(n)=Ks(i)*(disL{i}(n+1)-1)*(Rcy{i}(n+1)-Rcy{i}(n))\/disL{i}(n+1);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %\u5f2f\u66f2\u529b<\/span><\/span>\n\t<\/div>\n\n\t\t for <\/span>n=1:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t if <\/span>n>=3 && n<=Nnodes(i)-2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n-2)-4*Rcx{i}(n-1)+6*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n-2)-4*Rcy{i}(n-1)+6*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n+2)-2*Rcx{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n+2)-2*Rcy{i}(n+1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(Rcx{i}(n)+Rcx{i}(n-2)-2*Rcx{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(Rcy{i}(n)+Rcy{i}(n-2)-2*Rcy{i}(n-1));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==2<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n-1)+5*Rcx{i}(n)-4*Rcx{i}(n+1)+Rcx{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n-1)+5*Rcy{i}(n)-4*Rcy{i}(n+1)+Rcy{i}(n+2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)-1<\/span>\n\t<\/div>\n\n\t\t Fbx{i}(n)=-Kb(i)*(-2*Rcx{i}(n+1)+5*Rcx{i}(n)-4*Rcx{i}(n-1)+Rcx{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t Fby{i}(n)=-Kb(i)*(-2*Rcy{i}(n+1)+5*Rcy{i}(n)-4*Rcy{i}(n-1)+Rcy{i}(n-2));<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t<\/div>\n\n\t\t %% \u4f4d\u7f6e\u66f4\u65b0 <\/span><\/span>\n\t<\/div>\n\n\t\t <\/span>\n\t<\/div>\n\n\t\t for <\/span>n=3:Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t % Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.01*U{i}(n)+0.01*sin(2*pi*j\/13000);<\/span><\/span>\n\t<\/div>\n\n\t\t Fx{i}(n)=Fsx{i}(n)+Fbx{i}(n)-0.02*U{i}(n);%+0.005*sin(2*pi*j\/(30000));<\/span><\/span>\n\t<\/div>\n\n\t\t Fy{i}(n)=Fsy{i}(n)+Fby{i}(n)-0.02*V{i}(n);<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t if <\/span>n==Nnodes(i)<\/span>\n\t<\/div>\n\n\t\t Fx{i}(Nnodes(i))=Fx{i}(Nnodes(i))+0.4*((sin(2*pi*j\/10000)>0)-0.5);<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t U{i}(n)=U{i}(n)+Fx{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t V{i}(n)=V{i}(n)+Fy{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcx{i}(n)=Rcx{i}(n)+U{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t Rcy{i}(n)=Rcy{i}(n)+V{i}(n)*dt;<\/span>\n\t<\/div>\n\n\t\t end<\/span><\/span>\n\t<\/div>\n\n\t\tend<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\t% <\/span><\/span>\n\t<\/div>\n\n\t\tif <\/span>mod(j,200)==0<\/span>\n\t<\/div>\n\n\t\tclf <\/span>\n\t<\/div>\n\n\t\tclc<\/span>\n\t<\/div>\n\n\t\tj<\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\taxis([-100 100,0 100])<\/span>\n\t<\/div>\n\n\t\tset(gcf,'Color'<\/span>,[0.8 0.8 0.8])<\/span>\n\t<\/div>\n\n\t\thold on<\/span><\/span>\n\t<\/div>\n\n\t<\/div>\n\n\t\tfor <\/span>i=1:Nfila<\/span>\n\t<\/div>\n\n\t\t
![\"\"](\"\/wp-content\/uploads\/2025\/11\/20251111200632_30308.png\")