با سلام خدمت کاربران در صورتی که با خطای سیستم پرداخت بانکی مواجه شدید از طریق کارت به کارت (6037997535328901 بانک ملی ناصر خنجری ) مقاله خود را دریافت کنید (تا مشکل رفع گردد).
دسته بندی:
فیزیک عمومی - General Physics
سال انتشار:
2020
عنوان انگلیسی مقاله:
Further investigation on improved viscoelastic contact force model extended based on hertz’s law in multibody system
ترجمه فارسی عنوان مقاله:
تحقیقات بیشتر در مورد مدل نیروی تماس ویسکوالاستیک بهبود یافته بر اساس قانون هرتز در سیستم چند بعدی
منبع:
Sciencedirect - Elsevier - Mechanism and Machine Theory, 153 (2020) : doi:10:1016/j:mechmachtheory:2020:103986
نویسنده:
Gengxiang Wang ∗, Caishan Liu
چکیده انگلیسی:
Since the Hertzian contact stiffness coefficient is closely related to the power exponent, the modification of the Hertzian contact stiffness coefficient leads to some problems: (i) the power exponent must be changed with the improved contact stiffness coefficient, oth- erwise, the unit of the contact force is not newton; (ii) since the power exponent is one of the factors to determine the magnitude of the contact force, the inappropriate power exponent makes the multibody system hard to convergence or lose physical meaning. The main goal of this investigation is to reveal the shortcoming of the improved contact stiff- ness coefficient, and develop two different contact force models suited for the internal and external contact form associated with the hysteresis damping factor from Lankarani- Nikravesh contact force model (L-N model). The effectiveness of the external contact force model is validated by the bouncing example. The correctness of the internal contact force model used in the multibody system with a clearance revolute joint is validated by the experimental data.
Keywords: Multibody system | Power exponent | Hertzian contact stiffness coefficient | Internal contact force model | External contact force model
قیمت: رایگان
توضیحات اضافی:
تعداد نظرات : 0