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| Influence of Geometric Parameters on Surface Quality of SPF/DB Hollow Structure |
| DU Lihua1,2,3, ZHANG Xingzhen1,2,3, HAN Xiaoning1,2,3, SHAO Jie1,2,3, LI Weidong4 |
( 1. AVIC Manufacturing Technology Institute, Beijing 100024, China;
2. Aeronautical Key Laboratory for Plastic Forming Technologies, Beijing 100024, China;
3. Beijing Key Laboratory of Digital Plasticity Forming Technology and Equipment, Beijing 100024, China;
4. Beihang University, Beijing 100191, China ) |
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Abstract Influence of geometric parameters on the stress and strain distribution and the occurrence of surface groove during superplasic forming is simulated based on a plane strain model for three-sheet titanium SPF/DB hollow truss structure.Parameter ranges satisfying superplastic forming process requirement are obtained after experimental verification, providing a basic for design of three-sheet SPF/DB hollow structure.
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2018, 
