Design of a Practical Metal-Made Cold Isostatic Pressing (CIP) Chamber Using Finite Element Analysis

Wentao Song; Weicheng Cui

doi:10.3390/ma15103621

Design of a Practical Metal-Made Cold Isostatic Pressing (CIP) Chamber Using Finite Element Analysis

Materials (Basel). 2022 May 18;15(10):3621. doi: 10.3390/ma15103621.

Authors

Wentao Song^{1

2

3}, Weicheng Cui^{2

3}

Affiliations

¹ Zhejiang University-Westlake University Joint PhD Program, Zhejiang University, Hangzhou 310058, China.
² Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China.
³ Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou 310024, China.

Abstract

The fast development of deep-ocean engineering equipment requires more deep-ocean pressure chambers (DOPCs) with a large inner diameter and ultra-high-pressure (UHP). Using the pre-stressed wire-wound (PSWW) concept, cold isostatic pressing (CIP) chambers have become a new concept of DOPCs, which can provide 100% performance of materials in theory. This paper aims to provide a comprehensive design process for a practical metal-made CIP chamber. First, the generalized design equations are derived by considering the fact that the cylinder and wire have different Young's moduli and Poisson's ratios. Second, to verify the theory and the reliability of the CIP chamber, the authors proposed a series of FEA models based on ANSYS Mechanical, including a two-dimensional (2D) model with the thermal strain method (TSM) and a three-dimensional (3D) model with the direct method (DM). The relative errors of the pre-stress coefficient range from 0.17% to 5%. Finally, the crack growth path is predicted by using ANSYS's Separating Morphing and Adaptive Remeshing Technology (SMART) algorithm, and the fatigue life is evaluated by using the unified fatigue life prediction (UFLP) method developed by the authors' group. This paper provides a more valuable basis to the design of DOPCs as well as to the similar pressure vessels than the previous work.

Keywords: SMART crack growth; cold isostatic pressing; deep-ocean pressure chamber; finite element analysis; pre-stressed wire-wound; unified fatigue life prediction method.

Grants and funding

This work was supported by Zhejiang Key R&D Program (Grant No. 2021C03157), the “Construction of a Leading Innovation Team” project by the Hangzhou Municipal government, and the startup funding of New-Joined PI of Westlake University with grant number (041030150118).