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- W4210381395 abstract "Abstract We study a mechanical system with a finite number of degrees of freedom, subjected to perfect time-dependent frictionless unilateral (possibly nonconvex) constraints with inelastic collisions on active constraints. The dynamic is described in the form of a second-order measure differential inclusion. Under some regularity assumptions on the data, we establish several properties of the set of admissible positions, which is not necessarily convex but assumed to be uniformly prox-regular. Our approach does not require any second-order information or boundedness of the Hessians of the constraints involved in the problem and are specific to moving sets represented by inequalities constraints. On that basis, we are able to discretize our problem by the time-stepping algorithm and construct a sequence of approximate solutions. It is shown that this sequence possesses a subsequence converging to a solution of the initial problem. This methodology is not only used to prove an existence result but could be also used to solve numerically the vibroimpact problem with time-dependent nonconvex constraints." @default.
- W4210381395 created "2022-02-08" @default.
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- W4210381395 date "2022-02-01" @default.
- W4210381395 modified "2023-09-25" @default.
- W4210381395 title "Existence of solutions for a Lipschitzian vibroimpact problem with time-dependent constraints" @default.
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- W4210381395 doi "https://doi.org/10.1186/s13663-022-00713-y" @default.
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