A new comprehensive model of damage for flexural subassemblies prone to fatigue
| Autor: | Yongtao Bai, Ricardo Picón, Deborah C. Nardi, Julio Flórez-López, Xuhong Zhou |
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| Rok vydání: | 2021 |
| Předmět: |
Computer science
business.industry Engineering structures Mechanical Engineering Hinge Fracture mechanics Structural engineering Computer Science Applications Fatigue resistance Flexural strength Spring (device) Modeling and Simulation Bending moment General Materials Science Time domain business Civil and Structural Engineering |
| Zdroj: | Computers & Structures. 256:106639 |
| ISSN: | 0045-7949 |
| DOI: | 10.1016/j.compstruc.2021.106639 |
| Popis: | Fatigue resistance is a key performance for the life-cycle sustainability of materials and structures. Structural members subjected to flexural forces such as spring hinges in origami structures are one of the most commonly existing in nature and engineering practice but predicting their fatigue resistance is a challenge because of complex mechanisms of crack localization, nonstationary amplitudes in the time domain, and the influence of stress gradient due to bending moment. We developed a general lumped damage simulation model for predicting the fatigue life and the associated crack propagation in the full range of elastic and plastic amplitudes. It is found that the developed comprehensive damage model demonstrates a new perspective for fatigue-induced remaining life quantification for engineering structures. |
| Databáze: | OpenAIRE |
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