Damping device for material dynamic mechanical test system

Abstract

The invention relates to a damping device for a material dynamic mechanical test system. The damping device comprises an upper clamping piece, a sample piece, a lower clamping piece and a fixing piecewhich are fixedly connected in sequence from top to bottom; the upper clamping piece comprises an upper clamping block, an upper locking sleeve and an outer locking piece which are locked to one another from inside to outside in a slope matched locked mode; the lower clamping piece comprises a lower clamping block and a lower locking sleeve which are locked to each other from inside to outside ina slope matched locked mode; the lower locking sleeve is fixedly connected with the fixing piece; the upper end part of the sample piece is clamped and fixed by the upper clamping block; the lower end part of the sample piece is clamped and fixed by the lower clamping block; and the upper clamping block and / or the lower clamping block comprise / comprises a buffering layer of which the outer side surface is a slope. With the device adopted, the shock wave oscillation effect of a plate-shaped material in a high-speed tensile test can be effectively eliminated, and the problems of the severe fluctuation of a curve and large dispersion degree can be eliminated.

Description

technical field

[0001] The invention belongs to the technical field of material performance testing devices, and in particular relates to a shock absorbing device of a material dynamic mechanics testing system. Background technique

[0002] At present, there are mainly quasi-static stress state tests and high-speed dynamic stress state tests in material testing. For high-speed dynamic stress state tests, the national standard is GB / T 30069-2016. , the buffer, and the actuator are all rigidly connected, and the clamping stability of the sample is poor. The shock wave vibration during the actuation process will completely act on the load sensor, resulting in an increase in the dispersion of the data, which cannot be directly used for engineering use. However, with the improvement of NCAP regulations in various countries and the improvement of material use requirements, the demand for dynamic mechanical performance testing of materials is increasing. Eliminating large fluctuat...

Examples

Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...

technical field

[0001] The invention belongs to the technical field of material performance testing devices, and in particular relates to a shock absorbing device of a material dynamic mechanics testing system. Background technique

[0002] At present, there are mainly quasi-static stress state tests and high-speed dynamic stress state tests in material testing. For high-speed dynamic stress state tests, the national standard is GB / T 30069-2016. , the buffer, and the actuator are all rigidly connected, and the clamping stability of the sample is poor. The shock wave vibration during the actuation process will completely act on the load sensor, resulting in an increase in the dispersion of the data, which cannot be directly used for engineering use. However, with the improvement of NCAP regulations in various countries and the improvement of material use requirements, the demand for dynamic mechanical performance testing of materials is increasing. Eliminating large fluctuat...

Examples

Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...

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