根据结构损伤前后单元模态应变能的变化，改进了基于单元模态应变能变化率的结构损伤定位法。为了验证该法的有效性，利用有限元软件ANSYS10.0建立一个三层空间刚架模型，设置了单损伤和多损伤两种损伤工况。经过数值验算发现，该方法能够定位不同的损伤工况，且方法简便，具有较高的精度。%According to the change ratio of elemental strain energy before and after the damage of structure, an improved structure damage quantification algorithm is presented. In order to verify the effectiveness of this method, a space frame model is established by the FEM software ANSYS 10. 0, and two different damage cases are simulated. The analysis indicates that this method could locate different damage cases. In addition, this method is simple and has satisfactory precision.
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