该算法采用矩阵编码方案，建立罚函数满足课表问题中的多重约束条件。
Matrix used as encoding of the algorithm, and a penalty function is adopted to satisfy the multi-constraint.
应用虚位移原理和结合考虑材料交界面上的约束条件，文章建立了接触单元的刚度矩阵和等效荷载向量。
Employing the virtual displacement principle and considering constraint conditions of material interface, the stiffness matrix and equivalent load vector for this element are established.
进而在符合机床实际加工状态的边界约束条件下，利用传递矩阵法对传动链扭振特性作了计算分析。
Under new boundary restraint condition in accordance with the actual working condition of the machine, the torsional freqency response is computed with complex transfer matrix method.
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