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粘弹性变速运动梁稳定性的直接多尺度分析
Direct multiscale analysis of stability of an axially accelerating viscoelastic beam
【摘要】 研究粘弹性轴向加速运动梁横向振动的稳定性。将多尺度法直接应用于系统控制方程,导出了消去长期项的可解性条件。利用该条件得到了次谐共振和组合共振的稳定边界。给出的数值算例说明了粘弹性系数对稳定性边界的影响。
【Abstract】 The stability is investigated for transverse vibration of an axially accelerating viscoelastic beam. The method of multiple scales is applied directly to the governing equation, and the solvability condition is derived from eliminating secular terms. Based on the condition, the stability boundaries are obtained in the cases of subharmonic resonance and conbination resonance. Numerical examples are presented to show the effects of viscoelastic coefficient on the stability boundaries.
【关键词】 梁;
粘弹性;
多尺度法;
次谐共振;
组合共振;
【Key words】 beam; viscoelasticity; method of multiple scales; subharmonic resonance; combination resonance;
【Key words】 beam; viscoelasticity; method of multiple scales; subharmonic resonance; combination resonance;
【基金】 国家自然科学基金资助项目(10472060);上海市自然科学基金资助项目(04ZR14058);沈阳航空工业学院博士启动基金资助项目(05YB04)
- 【文献出处】 振动工程学报 ,Journal of Vibration Engineering , 编辑部邮箱 ,2005年02期
- 【分类号】TH113.2
- 【被引频次】42
- 【下载频次】308