High-temperature flexible loading device

Abstract

The invention discloses a high-temperature flexible loading device, and belongs to the field of experimental mechanics. The loading device comprises one or more heating and loading units. The heatingand loading units realize partitioned thermal loading force loading, and each heating and loading unit sequentially comprises a thermocouple, a heating body, a heat preservation and insulation layer and a water bag cover from bottom to top. A water bag is arranged in a space formed by the water bag cover and the heat preservation and insulation layer. The device is simple, reliable, rapid in heating, high in loading precision and low in test cost. The surface of a test piece is covered with a flexible heating film and a thermal insulation material. The test piece is rapidly heated. The heatingfilm directly covers the test piece, so that the heating is rapid, the surface temperature of the test piece can reach 300-1000 DEG C within tens of seconds, the heat preservation and insulation layer is paved outside the heating layer, the heating speed and the energy consumption loss are well ensured, the water bag is used for loading, and the test requirements of flexible and rapid heating andloading are met.

Description

technical field [0001] The invention belongs to the field of experimental mechanics, in particular to a high-temperature flexible loading device. Background technique [0002] In aviation, navigation, transportation, road and bridge, building, and port engineering structures, the structural parts composed of various materials are complex stress-bearing members, and they are all under complex stress states in various environments for a long time, so these The structural strength of components under various environments is an important research topic in structural mechanics. Especially in the design of modern engineering structures, it is necessary to study the strength of the structure under complex loads and environments. Among the strength problems under these complex loads and environments, it is most difficult to achieve flexible application of loads in high temperature environments, so it is urgently needed In the laboratory, complex loads and high-temperature environme...

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Problems solved by technology

[0003] For a long time, it has been very difficult to achieve low cost for this type of structural test

At present, the method of heating with quartz lamps cannot be realized, mainly due to the blocking of the loading device, which causes unsolvable shortcomings to the temperature on the surface of the structure. The key problem is that it is impossible to solve the uniform distribution or surface load and temperature of the structure. These quartz lamps and equipment are expensive, have serious light pollution, have strict requirements on the use environment and personnel operation, and have high energy consumption, and high test costs are required for use.

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