公开(公告)号：US10269338B2

公开(公告)日：2019-04-23

申请号：US15319851

申请日：2015-07-21

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Jung-Wuk Hong ,  Seung-Jin Yang ,  Sang-Eon Lee

IPC: E04F15/20 ,  E04B1/82 ,  G10K11/168 ,  H04R1/34

Abstract: A hard panel of wall and floor structures for reducing floor impact sound according to example embodiments includes patterned layer having different density and elastic modulus form a base layer. A transmission path of an acoustic wave may be changed in a lateral direction by passing the patterned layer and the sound energy is dissipated by the refection, refraction, and cancellation of the acoustic wave. Thus, a noise is reduced.The hard panel of the wall and floor structures according to example embodiments is effectively reduces the light and heavy impact sounds. In addition, the hard panel is formed by at least one patterned layer to refract and reflect the acoustic wave such that the floor noise may be effectively dissipated. The hard panel is further includes the sound absorbing material to absorb the noise passing through the hard panel such that the floor noise can be effectively reduced.

公开(公告)号：US11960804B2

公开(公告)日：2024-04-16

申请号：US16959942

申请日：2018-01-19

Applicant: Korea Advanced Institute of Science And Technology

Inventor： Jung-Wuk Hong ,  Seong Eun Oh ,  Sang Eon Lee ,  Suyeong Jin

IPC: G06F30/23 ,  G06F9/38 ,  G06F17/16

CPC classification number: G06F30/23 ,  G06F17/16 ,  G06F9/3836

Abstract: A peridynamic method having an added mirroring node according to embodiments of the present invention includes: a first step of calculating a shape tensor of a first node; a second step of calculating force state vectors of the first node and each of a plurality of second nodes by using the shape tensor; and a third step of calculating a peridynamic motion equation of the first node by using the force state vectors. The first node is a node located on a boundary of a structure and has a predetermined size horizon region, the plurality of second nodes is nodes in the horizon region, the plurality of second nodes includes one or more third nodes, and the third node is a second node having no node at a point which is origin-symmetrical based on the first node among the plurality of second nodes. In the first step, the shape tensor is calculated by using a position value in which the third node is origin-symmetrical based on the first node.

公开(公告)号：US20170138042A1

公开(公告)日：2017-05-18

申请号：US15319851

申请日：2015-07-21

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Jung-Wuk Hong ,  Seung-Jin Yang ,  Sang-Eon Lee

IPC: E04B1/86 ,  G10K11/168 ,  E04F13/075 ,  E04B5/16 ,  E04F15/20

CPC classification number: G10K11/168 ,  E04B2001/8263 ,  E04F15/203 ,  H04R1/345

Abstract: A hard panel of wall and floor structures for reducing floor impact sound according to example embodiments includes patterned layer having different density and elastic modulus form a base layer. A transmission path of an acoustic wave may be changed in a lateral direction by passing the patterned layer and the sound energy is dissipated by the refection, refraction, and cancellation of the acoustic wave. Thus, a noise is reduced.The hard panel of the wall and floor structures according to example embodiments is effectively reduces the light and heavy impact sounds. In addition, the hard panel is formed by at least one patterned layer to refract and reflect the acoustic wave such that the floor noise may be effectively dissipated. The hard panel is further includes the sound absorbing material to absorb the noise passing through the hard panel such that the floor noise can be effectively reduced.