報告題目：SOLID VISCOELASTICITY IN CONTACT MECHANICS AND ELASTOHYDRODYNAMIC LUBRICATION
時間👱🏼：2022年12月13日（周二）下午3:00-4:30
騰訊會議🏄🏿♀️： 902-500-3931🏞，密碼：470901
主持人：王靜教授
主講人中文簡介：C.H. Venner於荷蘭特文特大學獲博士學位，在以色列魏茨曼沐鸣2從事博士後工作💗。目前任荷蘭特文特大學一級教授👉🏼，工學技術沐鸣2流體動力工程系主任, SKF工程研發中心高級咨詢專家， ASME Journal of Tribology 副主編（1998-2006兩屆），ImechE part J. Journal of Engineering Tribology編委（2002-今）🙆🏽，國際軸承會議-軸承世界（德國漢諾威）科學委員會成員。特文特大學教授認命委員會成員、代爾夫特技術大學終身教職和教授認命委員會委員🎍。
C.H. Venner教授是薄膜流動和彈流潤滑領域的國際知名專家，在流體動力學及相關領域如薄膜流動（滾動軸承、齒輪等的潤滑）、計算流體力學，工程和物理🥖、航空動力學、航空聲學的多尺度/多重網格/計算方法等方面有25年的研究經驗⛄️，所構建的算法應用範圍從分子間的相互作用到潤滑問題🧑🏿🎨、復合材料和非均質材料的結構力學問題、聲學問題、形貌優化🐸🦻🏿、固液界面設計、代數多重網格法🍔、多重網格圖像區分法👼🏼、高雷諾數的計算流體力學研究、航空動力學及空氣流動的多重網格方法。在國際期刊和會議論文集中發表學術論文200余篇，出版專著《Multilevel Methods in Lubrication》👩🏽⚕️。。
報告內容摘要:
Lubricated concentrated contacts are common in engineering applications, mostly between "hard" materials (steel) as in rolling bearings, cam-followers, and gears, but also between a hard and a soft part as in the case of a steel and an elastomeric seal. In recent decades, soft materials are increasingly used in mechanical engineering, in aviation industry, and in various processes in physics, and biomechanics, due to advantages such as light weight, good recyclability, and controllable design-performance capability. For “hard” materials, the deformation of the contacting elements is predominantly elastic. The understanding of the physical mechanisms governing the lubrication film formation and the associated pressure generation has reached a very high level of predictability. However, soft materials exhibit viscoelastic behavior in contacts, and, in spite of the excellent work that has been done regarding the elastomeric seal contacts, the current understanding of the effect of solid viscoelasticity on the lubrication of soft contacts, particularly for point contacts, is less advanced than the understanding of the purely elastic contacts. This limits the design and performance optimization of the related tribological contacts andsystems. In this presentation fundamental aspects of the modeling and efficient numerical simulation of viscoelastic point contact problems are introduced.