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厚度的板料。 覆蓋件被廣泛應(yīng)用于航空,航天,汽車,船舶,工程機械 領(lǐng)域。nite strain threedimensional continuum theory [J]. Inter national Journal of Solids and Structures, 2020, 39(3): 709723. [3] Kawka M, Kakita T. Simulation of multistep sheet metal forming processing by a static explicit FEM code [J]. Journal of Materials Processing Technology, 1998, 80(8): 123133. [4] Liu Hongwen. Shell theory [M]. Hangzhou: Zhejiang University Press, 1988 (in Chinese). [5] Li Mingzhe, Cai Zhongyi, Cui Xiangji. Multipoint forming|A new 176。ed method of wrinkling simulation [J]. Journal of Materials Processing Technology, 2020, 121(1): 1922. [11] Lancaster E R, Calladine C R, Palmer S C. Paradoxical wrinkling behavior of a thin cylindrical shell under axial pression [J]. International Jour nal of Mechanical Science, 2020, 42(3): 843865. [12] Wang X, Jian C. On the prediction of sidewall wrin kling in sheet metal forming processes [J]. Interna tional Journal of Mechanical Science, 2020, 42(12): 23692394. 。gurable tooling and surface heating for incremen tal forming of posite aircraft parts [J]. Journal of Manufacturing Science and Engineering, 2020, 125(3): 333343. [8] Song Aiping, Yi Hong, Tang Wencheng, et al. The process of pressing and forming sheet inside die and poles 176??芍貥?gòu)模具可以減少制造成本,縮短制造周期,提高產(chǎn)品在市場的競爭力 。而且它可以用一個模具實現(xiàn)多用途 。圖 14顯示了不銹鋼馬鞍板厚度 毫米。一系列的沖壓頭可以用 FDM系統(tǒng)在兩三天內(nèi)產(chǎn)生出。當(dāng)上、下模閉合 ,外圍桿和中 間桿的表面結(jié)合為連續(xù)成形表面。目前 ,通過直接使用傳統(tǒng)的沖壓模具成形馬鞍板件是幾乎不可能。圖 11顯示了半球形板的厚度為 mm。 圖 9 半球形板件的 3D模型 通過撤掉球形沖壓模具的一半桿 ,它可以用來成形半球形板件。 σ crq = MPa (2)