Bidirectional eccentric loading device for bending component in drop hammer impact test
A technology of drop hammer impact test and eccentric loading, which is applied in the direction of impact test, machine/structural component test, measuring device, etc. It can solve the problems such as difficult to achieve bidirectional bending, and avoid length loss, avoid detachment, and force transmission path clear effect
Pending Publication Date: 2021-06-01
TAIYUAN UNIV OF TECH
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Problems solved by technology
It is difficult for the boundary restraint device in the existing drop weight impact test to realize the two-way compression-bending boundary condition
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[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] This embodiment provides a two-way eccentric loading device for bending members in a drop weight impact test, including a two-way eccentric restraint mechanism for connecting with both ends of the structural member 1, and an axial loading device for axially loading the structural member 1. Mechanism and drop hammer 2 for vertical impact on structural member 1; bidirectional eccentric restraint mechanism includes upper pressing part 3, lower pressing part 4, force transmission support 5, ball hinge, rolle...
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The invention provides a bidirectional eccentric loading device for a bending component in a drop hammer impact test, and belongs to the technical field of component disaster simulation devices. The device comprises bidirectional eccentric constraint mechanisms, an axial loading mechanism and a drop hammer; the bidirectional eccentric constraint mechanism comprises an upper pressing piece, a lower pressing piece, a force transmission support, a spherical hinge, a rolling shaft and a reaction frame I; the upper pressing piece and the lower pressing piece clamp the force transmission support through the rolling shaft, and the axis of the rolling shaft is perpendicular to the axis of a structural component; the force transmission support is connected with the end part of the structural component through a spherical hinge, and the spherical hinge and the structural component are eccentrically arranged; the force transmission support of a first bidirectional eccentric constraint mechanism is connected with the reaction frame I, and the force transmission support of a second bidirectional eccentric constraint mechanism is connected with the axial loading mechanism. The bidirectional bending boundary condition can be realized, the deviation between the boundary condition in the test and the boundary condition in the actual structure is reduced, and related problems such as crashworthiness of the bidirectional bending component under the action of the impact load can be researched more accurately.
Description
technical field [0001] The invention belongs to the technical field of component disaster simulation devices, and specifically discloses a bidirectional eccentric loading device for bending components in a drop weight impact test. Background technique [0002] Accidental disasters such as explosions and impacts, as well as natural disasters such as earthquakes and debris flows, will cause local or overall deformation of structural components, and even cause structural components to lose their bearing capacity and cause structural collapse. The self-weight drop weight test is to lift a hammer head of a certain mass to a specified height, drop the hammer head through its own weight to impact the structural components, and then observe the surface damage of the structural components after impact and study the deformation, impact force and other indicators of the structural components. [0003] At present, the drop weight impact test can realize the ideal axial compression of th...
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IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 马小敏张文浩赵晖王蕊
Owner TAIYUAN UNIV OF TECH