The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2018
Filed:
Jul. 07, 2016
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Ryouta Hirose, Kanagawa, JP;
Daiji Ichishima, Kanagawa, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A granular material is a simulation target, wherein a force acting on each grain is expressed by a potential dependent term and an energy dissipation term. The potential dependent term depends on an interaction potential ϕ between the grains. Physical quantities included in the potential dependent term are renormalization-transformed so that a hamiltonian form expressed by a kinetic energy of the each grain and a potential energy based on the interaction potential ϕ does not change. Physical quantities included in the dissipation term are renormalization-transformed so that a change rate of the potential dependent term and a change rate of the dissipation term become equal. Temporal development of a renormalized granular material is calculated by performing numerical integration with respect to a motion equation of each grain of the renormalized granular material.