该杆单元假设为直杆，在端部施加力为轴向荷载，材料特性沿全长均质。

The SPAR element assumes a straight bar, axially loaded at its ends, and of uniform properties from end to end.

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该杆单元假设为直杆，在端部施加力为轴向荷载，材料特性沿全长均质。

The SPAR element assumes a straight bar, axially loaded at its ends, and of uniform properties from end to end.

youdao