A unified direct method for ratchet and fatigue analysis of structures subjected to arbitrary cyclic thermal-mechanical load histories

Zhiyuan Ma; Xiaoxiao Wang; Haofeng Chen; Fu-Zhen Xuan; Yinghua Liu

doi:10.1016/j.ijmecsci.2020.106190

A unified direct method for ratchet and fatigue analysis of structures subjected to arbitrary cyclic thermal-mechanical load histories

Zhiyuan Ma, Xiaoxiao Wang, Haofeng Chen, Fu-Zhen Xuan, Yinghua Liu

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, the distinction between material ratchetting and structural ratchetting is clarified, and the concept of constant life diagram is extended to depict low cycle fatigue life boundary in structural design. To provide a novel one-stop solution for structural fatigue and ratchetting problems, a Unified Procedure for Fatigue and Ratchet Analysis (UPFRA) has been proposed. The UPFRA has been successfully applied to two different engineering structures considering complex geometry and temperature-dependent material properties. By comparing the results with ABAQUS step-by-step inelastic analysis, the UPFRA has been verified to be a robust engineering tool with great accuracy, usability, and efficiency.

Original language	English
Article number	106190
Journal	International Journal of Mechanical Sciences
Volume	194
Early online date	10 Nov 2020
DOIs	https://doi.org/10.1016/j.ijmecsci.2020.106190
Publication status	E-pub ahead of print - 10 Nov 2020

Keywords

ratchet
low cycle fatigue
direct methods
linear matching method
unified procedure for fatigue and ratchet analysis

Access to Document

10.1016/j.ijmecsci.2020.106190

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Ma-etal-IJMS-2021-A-unified-direct-method-for-ratchet-and-fatigue-analysis-of-structures-subjected
Accepted author manuscript, 6.26 MB
Licence: CC BY-NC-ND 4.0
Embargo ends: 10/11/21

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Cite this

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title = "A unified direct method for ratchet and fatigue analysis of structures subjected to arbitrary cyclic thermal-mechanical load histories",

abstract = "In this paper, the distinction between material ratchetting and structural ratchetting is clarified, and the concept of constant life diagram is extended to depict low cycle fatigue life boundary in structural design. To provide a novel one-stop solution for structural fatigue and ratchetting problems, a Unified Procedure for Fatigue and Ratchet Analysis (UPFRA) has been proposed. The UPFRA has been successfully applied to two different engineering structures considering complex geometry and temperature-dependent material properties. By comparing the results with ABAQUS step-by-step inelastic analysis, the UPFRA has been verified to be a robust engineering tool with great accuracy, usability, and efficiency. ",

keywords = "ratchet, low cycle fatigue, direct methods, linear matching method, unified procedure for fatigue and ratchet analysis",

author = "Zhiyuan Ma and Xiaoxiao Wang and Haofeng Chen and Fu-Zhen Xuan and Yinghua Liu",

year = "2020",

month = nov,

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language = "English",

volume = "194",

journal = "International Journal of Mechanical Science",

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T1 - A unified direct method for ratchet and fatigue analysis of structures subjected to arbitrary cyclic thermal-mechanical load histories

AU - Ma, Zhiyuan

AU - Wang, Xiaoxiao

AU - Chen, Haofeng

AU - Xuan, Fu-Zhen

AU - Liu, Yinghua

PY - 2020/11/10

Y1 - 2020/11/10

N2 - In this paper, the distinction between material ratchetting and structural ratchetting is clarified, and the concept of constant life diagram is extended to depict low cycle fatigue life boundary in structural design. To provide a novel one-stop solution for structural fatigue and ratchetting problems, a Unified Procedure for Fatigue and Ratchet Analysis (UPFRA) has been proposed. The UPFRA has been successfully applied to two different engineering structures considering complex geometry and temperature-dependent material properties. By comparing the results with ABAQUS step-by-step inelastic analysis, the UPFRA has been verified to be a robust engineering tool with great accuracy, usability, and efficiency.

AB - In this paper, the distinction between material ratchetting and structural ratchetting is clarified, and the concept of constant life diagram is extended to depict low cycle fatigue life boundary in structural design. To provide a novel one-stop solution for structural fatigue and ratchetting problems, a Unified Procedure for Fatigue and Ratchet Analysis (UPFRA) has been proposed. The UPFRA has been successfully applied to two different engineering structures considering complex geometry and temperature-dependent material properties. By comparing the results with ABAQUS step-by-step inelastic analysis, the UPFRA has been verified to be a robust engineering tool with great accuracy, usability, and efficiency.

KW - ratchet

KW - low cycle fatigue

KW - direct methods

KW - linear matching method

KW - unified procedure for fatigue and ratchet analysis

U2 - 10.1016/j.ijmecsci.2020.106190

DO - 10.1016/j.ijmecsci.2020.106190

M3 - Article

VL - 194

JO - International Journal of Mechanical Science

JF - International Journal of Mechanical Science

SN - 0020-7403

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ER -