采用非线性有限元方法的压力容器分析设计

TCDLB

Design by Analysis of a Pressure Vessel Using ASME by Non-Linear Finite Element Method
ABSTRACT Design of pressure vessels is governed by standard design codes that ensure high safety performances. Among these, ASME Section III and Section VIII division 2 are widely used in nuclear and general application pressure vessel design respectively. Both use design by analysis (DBA) method which in general is more complex, and hence needs expertise.  In the present study, non-linear finite element analyses were performed on a typical pressure vessel using two different models Viz. 2D and 3D elements. Limits loads were evaluated using different methods suggested by ASME Section III and VIII-2.  It was observed that the limit load predicted using ASME Section III is more conservative, than the one suggested by Section VIII division-2. This means that, the pressure vessels designed by ASME Section III, give less allowable working pressure as compared to VIII-2. This is because the ASME Section III deals with nuclear components. The details of analysis performed and the results obtained are discussed in this paper.
Keywords: Pressure Vessels, Finite Element Method, Limit Load, Nonlinear, Elasto-Plastic, Stress Analysis.

阿谢克那·李

Design by Analysis of a Pressure Vessel Using ASME by Non-Linear Finite Element Method