回転チェーン系における非線形摩擦特性のプロクシを用いた緩和と数値的安定性

抄録

This paper deals with non-linear relaxation and numerical stability of friction of a rotating chain system. A method of proxy is introduced to simulate the friction in Chain-CVT (continuously variable transmission) system which offers a continuum of gear ratios between desired limits. Chain-CVT systems fall into the category of friction-limited drives as their dynamic performance and torque capacity rely significantly on the friction characteristics of the contact patch between the chain and the pulley. In this research, a planer multibody model is used to predict production chain-CVT's characteristics and examine the three friction models. The chain is modeled link by link. CVT's non-smooth dry friction is approximated by an application of proxy based ODEs and it shows drastic effectiveness of numerical stability and superiority to application of smooth nonlinear function. The model is simulated under the conditions of a constant primary pulley speed and varying secondary torque.