汽車車身結(jié)構(gòu)點焊的數(shù)值模擬與試驗

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

首頁 > 過刊瀏覽>2007年第38卷第8期 >155-158. DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

汽車車身結(jié)構(gòu)點焊的數(shù)值模擬與試驗
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                        10.3969/j.issn.1000-1298.[year].8.[sequence]
                    
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摘要:

采用試驗和有限元數(shù)值模擬的方法,，對汽車車身低碳鋼電阻點焊的過程進行了研究,。利用電,、熱、力有限元法對電阻點焊的過程進行了模擬,，得到了焊接電流,、電極壓力等工藝參數(shù)及焊件厚度對熔核尺寸的影響關(guān)系，從而確定了其與接頭質(zhì)量的關(guān)系,。模型初步實現(xiàn)了熱,、電、力三者的耦合,，得到的工藝參數(shù)對焊接接頭質(zhì)量影響的模擬結(jié)果與試驗結(jié)果表明車身的試驗?zāi)B(tài)模型以及計算模態(tài)模型能較好地吻合,。

Abstract:

The resistance spot welding process of mild steel was studied by experimental and finite element methods. The results indicated that the relationship between process parameters (such as welding current, electrode force and plate thickness) and nugget size, from which the relationship between process parameters and the quality of joints has been derived. The results also showed the reason for expulsion through theoretical and FEM(finite element method) analysis by taking account of the effect of the contact state on thermal and electrode process. Electromagnetic thermal and structural fields have been carried out to verify the models established for analyzing spot welding, and the results showed that numerical simulation of spot welding is practicable.

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楊小衛(wèi),朱茂桃,袁月清,孫軍.汽車車身結(jié)構(gòu)點焊的數(shù)值模擬與試驗[J].農(nóng)業(yè)機械學(xué)報,2007,38(8):155-158.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(8):155-158.

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