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| Methods for field quantity updating during plastic forming of metals using numerical manifold methods |
| Received:January 03, 2024 Revised:February 29, 2024 |
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| DOI：10.7511/jslx20240103001 |
| KeyWord:plastic forming numerical manifold method field update |
| Author | Institution |
| 黎梓雯 |
广东工业大学 材料与能源学院, 广州 |
| 章争荣 |
广东工业大学 材料与能源学院, 广州 ;广东省金属成形加工与锻压装备技术重点实验室, 广州 |
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| Abstract: |
| Two sets of separate and independent coverage grids are used in the numerical manifold method:mathematical cover and physical cover.When the numerical manifold method is used to simulate the plastic forming process,the physical domain will be deformed on the fixed mathematical mesh.Therefore,the physical grid needs to be updated based on the mathematical coverage grid and the physical coverage information needs to be transformed.In this paper,an interpolation mapping method is proposed to calculate the coordinates of the physical grid nodes at the previous time updated at the current time,and the field information of the physical mesh nodes updated at the previous time is obtained by using the cover function and weight function of cover at the previous time,and the calculation error can be reduced by revised iteration.The result of error analysis shows that the node information obtained by the node interpolation mapping is used as the initial value,and the number of iterations is reduced and the updating speed is accelerated.For this reason,this method is proved to be effective in updating the fields of old and new physical coverage grids. |
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