金屬板料受控激光噴丸強(qiáng)化的殘余應(yīng)力場(chǎng)分析

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金屬板料受控激光噴丸強(qiáng)化的殘余應(yīng)力場(chǎng)分析
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在分析受控激光噴丸強(qiáng)化機(jī)理的基礎(chǔ)上，通過激光噴丸強(qiáng)化力學(xué)效應(yīng)的物理模型和殘余應(yīng)力的彈塑性模型，分析了激光噴丸強(qiáng)化誘導(dǎo)殘余應(yīng)力的特點(diǎn)，研究了殘余應(yīng)力大小和深度與激光噴丸工藝參數(shù)的關(guān)系。通過調(diào)整激光參數(shù)及工藝條件以控制殘余應(yīng)力場(chǎng)的分布, 并根據(jù)殘余應(yīng)力場(chǎng)的分布判斷激光噴丸強(qiáng)化效果，保證了受控激光噴丸強(qiáng)化后工件的疲勞壽命獲得較大幅度的提高。

Abstract:

Controlled laser shock peening is an advanced surface treating technology. Based on representing the mechanics of controlled laser shock peening, physical model of mechanics effect and elastic-plastic model of residual stress were established, characteristic of laser-induced residual stress has been analyzed, the relations between laser processing parameters and laser-induced residual stress were researched. Distribution of residual stress field was controlled by adjusting laser parameters and technology condition, then the effect of LSP has been identified, furthermore, fatigue life of the components could be assuredly increased after controlled laser shock peening. 

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黃舒,周建忠,陳毅彬,孫月慶.金屬板料受控激光噴丸強(qiáng)化的殘余應(yīng)力場(chǎng)分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(12):195-198.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):195-198.

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