51 lines
1.5 KiB
Matlab
51 lines
1.5 KiB
Matlab
%绘制桁架函数，Scale为变形缩放系数(以下为绘制图像部分）
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function RenderTruss(ele,Load,Constr,x,y,U,LineWidth,LineStyle,Scale)
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CoordScale=[max(x)-min(x),max(y)-min(y)];
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k=1;
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%计算变形后坐标
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for i=1:length(x)
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if Constr(k,1)==i%--约束节点坐标不变
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k=k+1;
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else%--非约束节点坐标加上缩放后的位移
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x(i)=x(i)+Scale*U(2*i-1,1);y(i)=y(i)+Scale*U(2*i,1);
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end
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end
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%绘制杆件
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for i=1:length(ele(:,1))
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plot([x(ele(i,2)),x(ele(i,3))],[y(ele(i,2)),y(ele(i,3))],...
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LineStyle,'LineWidth',LineWidth*ele(i,4)/max(ele(:,4)));
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hold on
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end
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%绘制节点
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for i=1:length(x)
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x1=x(i);y1=y(i);
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scatter(x1,y1,15,'k','filled')
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end
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%绘制载荷
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maxLoad=abs(Load(1,2))%寻找绝对值最大的载荷
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for i=1:length(Load(:,1))
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if(maxLoad<abs(Load(i,3)))
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maxLoad=abs(Load(i,3))
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end
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end
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for i=1:length(Load(:,1))%绘制载荷箭头
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quiver(x(Load(i,1)),y(Load(i,1)),Load(i,2)/max(maxLoad),...
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Load(i,3)/max(maxLoad),...
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'LineWidth',1,'color','r','AutoScaleFactor',0.15*(CoordScale(1)+CoordScale(2)),...
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'MaxHeadSize',0.01*(CoordScale(1)+CoordScale(2)));
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end
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%绘制约束--选用结构最大的坐标尺寸作为基准来绘制约束
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for i=1:length(Constr(:,1))
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plot([x(Constr(i,1)) x(Constr(i,1))-0.02*max(CoordScale) x(Constr(i,1))+...
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0.02*max(CoordScale) x(Constr(i,1))],[y(Constr(i,1)) y(Constr(i,1))-...
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0.02*max(CoordScale) y(Constr(i,1))-0.02*max(CoordScale) y(Constr(i,1))],...
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'LineWidth',0.8,'color','r');
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end
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%绘制坐标轴
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axis equal
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axis([min(x)-0.1*CoordScale(1),max(x)+0.1*CoordScale(1),min(y)-...
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0.1*CoordScale(2),max(y)+0.1*CoordScale(2)]...
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) %限定图像的显示范围
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hold off
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end |