论文标题
时间依赖的接触力学
Time-dependent contact mechanics
论文作者
论文摘要
接触几何形状允许描述一些热力学和耗散系统。在本文中,我们引入了一种新的几何结构,以描述时间依赖时间的接触系统:Cocontact歧管。在这种情况下,我们在常规案例和奇异案例中发展了哈密顿和拉格朗日形式主义。在奇异的情况下,我们提出了一种约束算法,目的是在存在解决方案的地方找到一个子手法。作为一种特殊情况,我们研究了具有全体时间依赖时间约束的接触系统。分析了一些常规和单数示例,以及数值模拟。
Contact geometry allows to describe some thermodynamic and dissipative systems. In this paper we introduce a new geometric structure in order to describe time-dependent contact systems: cocontact manifolds. Within this setting we develop the Hamiltonian and Lagrangian formalisms, both in the regular and singular cases. In the singular case, we present a constraint algorithm aiming to find a submanifold where solutions exist. As a particular case we study contact systems with holonomic time-dependent constraints. Some regular and singular examples are analyzed, along with numerical simulations.