水下爆炸数值模拟联合算法求解结构稳态响应

在研究水下爆炸作用下加筋板架的稳态响应方面,以往的研究主要利用瞬态显式算法,得到的稳态响应结果存在一定的精度缺陷。提出一种改进的水下爆炸数值模拟方法。该方法利用ABAQUS/Explicit Standard算法,针对瞬态显式与稳态隐式静力分析,建立联合数值模拟方法。利用该方法分析某船体加筋板架的“瞬态稳态”响应。结果表明:联合“瞬态显式稳态隐式”算法的仿真结果与试验结果相差在10%以内,说明该方法可用于水下爆炸作用下加筋板架结构的响应分析,且采用联合“显式隐式”算法得到的结果更接近试验值,误差降低了39.8%。

Underwater Explosion Numerical Simulation Joint Algorithm for Solving Structural Steady Response

In the study of the steady response of the stiffened plate under the underwater explosion,the previous researches mainly use the transient explicit algorithm,and the results of the steady responses have some precision defects.An improved numerical simulation method of underwater explosion is proposed.This method uses ABAQUS/Explicit Standard algorithm to establish a joint numerical simulation method for the transient explicit and steady implicit static analysis.This method is used to analyze thetransient steady stateresponse of a stiffened plate frame.The results show that the difference between the simulation results of the combinedtransient explicit steady implicitalgorithm and the test results is less than 10%,which shows that the method can be used for the response analysis of stiffened plate structure under underwater explosion,and the results of the combinedexplicit implicitalgorithm are closer to the test values,with an error reduction of 39.8%.