论文部分内容阅读
利用有限元软件ANSYS/workbench,以平缓曲面零件为例,模拟零件单点渐进成过程,研究了优化方法中增量角度Δθ对零件厚度、成形精度、等效应变等方面的影响,并与传统固定增量步长方法进行对比。结果表明:加工层数相同时,优化方法更有助于提高板厚,且零件壁厚随着增量角度Δθ的增加而增加;优化方法较明显的提高了零件底部成形精度,无论增量角度Δθ取值多少,零件底部都能充分成形,与实验结果相吻合;加工层数相同时,在相同区域优化方法导致的板料等效应变大于固定增量步长成形方法,Δθ越小应变越均匀,但两种方法最终的等效应变趋于一致。
The finite element software ANSYS / workbench was used to simulate the single-point asymptotic process of the part. The influence of the incremental angle Δθ on the part thickness, forming accuracy and equivalent strain was studied. Compared with the traditional Fixed incremental step method for comparison. The results show that when the number of layers is the same, the optimization method is more conducive to increasing the thickness of the part, and the wall thickness of the part increases with the increment of the angle Δθ. The optimization method obviously improves the forming accuracy of the bottom of the part, Δθ value of the number of parts can be fully formed at the bottom, and the experimental results are consistent; processing the same number of layers, the same area of the plate caused by the equivalent method of deformation is greater than the incremental incremental fixed-step forming method, the smaller Δθ strain Uniform, but the ultimate equivalent strain of the two methods tend to be consistent.