论文标题:高尔夫球头受力状态模拟与选材研究
Study on the Shortcut Nitrification Process and the Kinetics of Shortcut Denitrification in Biological Aerated Filters
论文作者 鲜春桥
论文导师 陈敬超,论文学位 硕士,论文专业 材料学
论文单位 昆明理工大学,点击次数 112,论文页数 74页File Size5887k
2005-06-01论文网 http://www.lw23.com/lunwen_88170627/ 高尔夫球头;有限元法;碰撞分析;MSC.MARC
golf club head ; finite element method ; impact analysis ; MSC.MARC
本文详述了国内外高尔夫球具的发展状况。各厂商投入大量精力以提高其产品性能,但一直以实物模型试验以及用户的评价作为改善产品性能优化设计的基础,传统的设计路线:设计-制造-试验周期长、成本高,根本无法适应现代产品开发设计模式。 文中尝试将电脑辅助设计软件Solidworks及有限元分析软件MSC.Marc结合起来,设计球头,分析高尔夫球头与球碰撞的物理现象,寻求击球瞬间球头所受到的应力冲击及球头各部位的应力状态,从中寻找不同的球头材料所受到的最大应力及允许壁厚,为球头产品的开发、性能评价提供依据。 本文通过三维设计软件Solidworks建立了三个不同形状、大小的高尔夫球头模型,体积分别为210cc、320cc、380cc,在此基础上建立了完整的有限元分析模型;结合实验结果确定模拟计算的高尔夫球的材料性能参数:球芯弹性模量为35MPa、泊松比为0.4;球壳弹性模量为270MPa,泊松比为0.38;通过有限元法对三种不同材料的一系列厚度模型模拟分析,得出:对于打击面,不锈钢厚度应该在2.5mm以上、铝合金的厚度应该在4mm以上、钛合金应该在2.3mm以上才能满足强度方面的需要,不同的模型形状和体积对厚度的要求有一定的差异。对三种不同的模型采用同种材料时的击球性能进行了模拟分析,得出了适合不同模型的材料,铝合金较适合于模型2,钛合金较适合于模型1,不锈钢仅适合于体积较小的球头模型。最后,拟定静力压缩的实验方案对模拟结果进行实验验证,结果表明,模拟得到的整体应力分布状态与试验观察到的球的变形是一致的,均发生了明显的塑性变形,尽管试验值和理论值趋势以及大小有一定的差异,但总体来说基本一致,并给出了模拟值偏大的原因。 本研究工作证实了本文中的理论、技术以及相关软件在高尔夫球头的设计开发中的应用是可行的,可以满足实际设计需要。
In this paper, the development of golf products all over the world was reviewed. The manufacturers put a lot of engineering efforts into improving the performance of their products, yet they still depend on physical prototypes and subjective user evaluations to optimize the performance of their designs. This traditional design cycle, design-build-test, result to cost and time increase in products production and can not adapt to modern designing mode.This thesis integrates the computer-aided design software "Solidworks" and finite element analysis software of MSC.Marc to design folg club and investigate the physical phenomenon of impact between golf club head and golf ball. In order to find out the maximum vom mises stress and permitted wall thickness of different materials for golf club, the stress distribution and propagation of different golf club heads are studied. Then try to provide some references for products development and assessment of golf club.In present thesis three golf club head with different shape and size were studied and determined by 3D designing software Solidworks. There volumes were 210cc, 320cc, 380cc each. Then the finite element models are created. Combination with measurement results the material parameters of the golf ball for numerical simulation were determined. The ball core"s Yong"s modulus is 35MPa and Poisson Ratio is 0.4; the ball shell"s Yong"s modulus is 270MPa and Poisson Ratio is 0.35. The follows conclusion can be designed for the three golf clubs with different materials and a series of thickness by finite element analysis. The thickness of the club head made of stainless steel should be above 2.5mm, Al alloy should be above 4mm, Ti alloy should be above 2.3mm. Different model and volume of golf clubs will have some difference on the thickness. Proper materials of the club head were gained after hitting simulation for the three different models made of the same material. Al alloy is more adaptive for model 2 and Ti alloy for model 1. Stainless steel is adaptive for the club head of less volume only. Finally, the simulation result compare with the static compacting experiment was studied to verify the analysis above. The results show that the simulated result accorded with the experimental value. They Both appeared a large plastic distortion.. There is a little difference between experimental and simulated values, and the reason have been explainedThe results approved that the theory, technology and the software in this thesis could be used to golf products design.
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