戴莉,方军,程璐,等.材料参数对高强不锈钢管数控绕弯成形失稳起皱的影响[J].精密成形工程,2017,9(1):91-95.
DAI Li,FANG Jun,CHENG Lu,et al.Effects of Material Parameters on Wrinkling of High-strength Stainless Steel Tube in Numerical Control Rotary Draw Bending[J].Journal of Netshape Forming Engineering,2017,9(1):91-95. |
| 材料参数对高强不锈钢管数控绕弯成形失稳起皱的影响 |
| Effects of Material Parameters on Wrinkling of High-strength Stainless Steel Tube in Numerical Control Rotary Draw Bending |
| 投稿时间：2016-12-27 修订日期：2017-01-10 |
| DOI：10.3969/j.issn.1674-6457.2017.01.016 |
| 中文关键词: 材料参数 起皱 高强不锈钢管 数控绕弯 有限元模拟 |
| 英文关键词: material parameters wrinkling high-strength stainless steel tube NC rotary draw bending FE simulation |
| 基金项目:江西科技师范大学科研计划（2013XJZD001）；江西科技师范大学本科生科研基金（2016BKSKYZD015） |
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| 中文摘要: |
| 目的 研究材料参数波动对管材数控绕弯成形失稳起皱的影响规律。方法 基于ABAQUS有限元平台，建立了21-6-9高强不锈钢管数控绕弯成形过程三维弹塑性有限元模型，并验证了模型的可靠性；采用该模型模拟分析了材料参数波动对其数控绕弯成形过程失稳起皱的影响规律。结果 随着厚向异性指数、屈服强度的增大或弹性模量、硬化指数的减小，弯管的起皱趋势增大，泊松比和强度系数对弯管起皱趋势的影响较小。结论 材料参数对弯管起皱趋势影响的大小依次为：屈服强度、弹性模量、厚向异性指数、硬化指数、强度系数和泊松比。 |
| 英文摘要: |
| The work aims to obtain effect laws of material parameter variations on wrinkling of tube in numerical control rotary draw bending. A three-dimensional (3D) elastic plastic finite element (FE) model of 21-6-9 high-strength stainless steel tube in NC rotary draw bending was established based on the FE platform of ABAQUS, and its reliability was verified. Then, the effect laws of material parameters variations on wrinkling of that in NC rotary draw bending were studied by using the model. The wrinkling tendency of bent tube increased with the increase of thickness anisotropy exponent and yield strength or the decrease of elastic modulus and hardening exponent; while the strength coefficient and poisson's ratio had little influence on wrinkling tendency of bent tube. Influences of material parameters on wrinkling tendency of bent tube from high to low are yield strength, elastic modulus, thickness anisotropy exponent, hardening exponent, strength coefficient and poisson's ratio. |
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