有哪些信誉好的足球投注网站- 1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
- 2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
- 4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
- 5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
- 6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 7、VIP文档为合作方或网友上传，每下载1次， 网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
Dynamic contact interactions of fractal surfaces.pdf
Applied Surface Science 392 (2017) 872–882
Contents lists available at ScienceDirect
Applied Surface Science
journal homepage: /locate/apsusc
Dynamic contact interactions of fractal surfaces
Tamonash Jana, Anirban Mitra, Prasanta Sahoo ?
Department of Mechanical Engineering, Jadavpur University, Kolkata-700032, India
article info
Article history: Received 9 June 2016 Received in revised form 29 August 2016 Accepted 8 September 2016 Available online 29 September 2016
Keywords: Fractal surface Contact Nonlinear vibration Tangent modulus Yield strength
abstract
Roughness parameters and material properties have signi?cant in?uence on the static and dynamic properties of a rough surface. In the present paper, fractal surface is generated using the modi?ed two-variable Weierstrass-Mandelbrot function in MATLAB and the same is imported to ANSYS to construct the ?nite element model of the rough surface. The force-de?ection relationship between the deformable rough fractal surface and a contacting rigid ?at is studied by ?nite element analysis. For the dynamic analysis, the contacting system is represented by a single degree of freedom spring mass-damper-system. The static force-normal displacement relationship obtained from FE analysis is used to determine the dynamic characteristics of the rough surface for free, as well as for forced damped vibration using numerical methods. The in?uence of fractal surface parameters and the material properties on the dynamics of the rough surface is also analyzed. The system exhibits softening property for linear elastic surface and the softening nature increases with rougher topography. The softening nature of the system increases with increase in tangent modulus value. Above a certain value of yield strength the nature of the frequency response curve is observed to change its nature from softening to hardening.
? 2016 Elsevier B.V. All rights reserved.
1. Introduction
A variety of mechanical elements, such as gear, cam-follower mechani
您可能关注的文档
- Contact vaporization of an impacting drop on heated surfaces.pdf
- Contact with birth family in adoptive families headed by lesbian, gay male, and heterosexual parents.pdf
- Contact with birth family in intercountry adoptions Comparing families headed by sexual minority and heterosexual parents.pdf
- Contact-active antibacterial aerogels from cellulose nanofibrils.pdf
- Contact-printed ultrathin siloxane passivation layer for high-performance Si-PEDOTPSS hybrid solar cells.pdf
- Contacts between health care workers and patients in a short-stay geriatric unit during the peak of a seasonal influenza epidemic compared with a nonepidemic period.pdf
- Controllability and prediction-free control of coupled transport processes viewed as linear systems with distributed delays.pdf
- Controlled drug release from hydrogels for contact lenses Drug partitioning and diffusion.pdf
- Corneal aberration changes after rigid gas permeable contact lens wear in keratokonic patients.pdf
- Corneo-scleral contact lens in a piggyback system for keratoconus A case report.pdf
- Dynamic contour tonometry vs. non-contact tonometry and their relation with corneal thickness.pdf
- Dynamic modeling and contact analysis of a cycloid-pin gear mechanism with a turning arm cylindrical roller bearing.pdf
- Dynamic modeling and experimental validation for direct contact membrane distillation (DCMD) process.pdf
- Dynamic modeling and vibration response simulations of angular contact ball bearings with ball defects considering the three-dimensional motion of balls.pdf
- Dynamic Phenomena at PerovskiteElectron-Selective Contact Interface as Interpreted from Photovoltage Decays.pdf
- Dynamic water contact angle during initial phases of droplet impingement.pdf
- Dynamics of mechanical systems involving impact and friction using an efficient contact detection algorithm.pdf
- Dynamics of offshore risers using a geometrically-exact beam model with hydrodynamic loads and contact with the seabed.pdf
- Dynamics of population coding for object views following object discrimination training.pdf
- Early and delayed afterdepolarizations in rabbit heart Purkinje cells viewed by confocal microscopy.pdf
文档评论（0）