Impact comparability rule for single layer reticulated shells considering effects of geometric deviation and gravity
ZHONG Yukai1, JIANG Zhengrong2,3, YAO Xiaohu2, SHI Kairong2,3, LUO Bin4
1. Architectural Design and Research Institute, South China University of Technology, Guangzhou 510640, China;
2. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China;
3. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China;
4. School of Civil Engineering, Southeast University, Nanjing 211189, China
Abstract：According to the principle, based on considering the strain-rate effect, the impact comparability rule for single layer reticulated shells considering geometric deviation and gravity, respectively was derived. According to the test model published in literature, the corresponding FE numerical model was built using the nonlinear FE software LS-DYNA, its computing results were compared with the test model’s results measured to verify the correctness of the FE analysis method. Then FE analysis models for single layer reticulated shells were constructed using LS-DYNA only considering geometric deviation and simultaneously considering geometric deviation and gravity to verify the derived comparability rule. The computation results were compared with those of the models unmodified (not considering geometric deviation and/or gravity). It was shown that when only considering the effect of geometric deviation or simultaneously considering geometric deviation and gravity, the FE models modified can obtain the results to satisfy the comparability rule; the FE models modified can predict dynamic responses of the prototype better with a higher precision, while prediction results of the FE models unmodified have larger errors compared to those of the prototype, and they cannot be used in practical engineering.
钟渝楷1，姜正荣2,3，姚小虎2，石开荣2,3，罗斌4. 考虑几何偏差及重力影响的单层网壳冲击相似律研究[J]. 振动与冲击, 2018, 37(3): 230-236.
ZHONG Yukai1, JIANG Zhengrong2,3, YAO Xiaohu2, SHI Kairong2,3, LUO Bin4. Impact comparability rule for single layer reticulated shells considering effects of geometric deviation and gravity. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(3): 230-236.
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