The second step is taking the mass of wheel as target function. The stress, radial and cross displacement of wheel as restrain function, the spoke profile of wheel as design variable.
第二步是以车轮的质量为目标函数，以车轮的应力、径向及横向位移为约束函数，以车轮辐板形状为设计变量进行设计。
A new cross section displacement function and degree of freedom of nodes are introduced and improved which consider the effect of shear-lag.
在模型中，通过引入一种新的截面位移模式和节点自由度，考虑了剪力滞后效应的影响。
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