试件断裂对万吨级多功能结构试验系统隔振层影响的数值分析

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Abstract

The Facility for Advanced Structural Testing (FAST) is planned to be constructed by China State Construction Engineering Corporation Ltd (CSCEC). The maximum allowable value of vertical force is 10800t. It is necessary to consider the impact caused by the sudden fracture of the specimen. This paper simply introduces the design of FAST and isolation system. It focus on the finite element simulation of the impact cause by the sudden fracture of specimen. Using the transient dynamic analysis method by Ansys, the paper use the load step to simulate sudden fracture of the specimen. Time-history curve of X,Y,Z direction of the isolator and the isolator’s force in Z direction can be used as the evaluation index for the impact effect. Through changing the unloading time of load step, the paper compares the effects of unloading time on simulation of impact caused by sudden fracture, and check the requirement of displacement and force of the isolator. It finally give some suggestions about the unloading time of the load step to simulate fracture of the specimen.

Key words： fracture impact vibration isolator testing system

Received: 23 January 2015 Published: 25 February 2016

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	Articles by authors
	LI Guo-qiang1
	WANG Peng2
	SUN jian-yun2

Cite this article:

LI Guo-qiang1,WANG Peng2,SUN jian-yun2. The numerical analysis on impact caused by the fracture of specimen to Facility for Advanced Structural Testing(FAST)[J]. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(5): 216-221.

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2016/V35/I5/216

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