分析了强度匹配对角焊缝设计的影响，建立了角焊缝焊脚尺寸与板厚，强度匹配系数之间的关系，讨论了强度匹配选择的依据。
The influences of strength matching on fillet weld were analyzed. The relationships among fillet weld size, thickness of base metal and matching coefficient of strength were established.
推导出一般情形下柔性连接元的广义弹簧系数矩阵和刚体元的质量矩阵都是非对角的。
Both the general spring coefficient matrix of flexible connector and the mass matrix of discrete element are off-diagonal.
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