Testing dummy structure analysis

Thermal dummy is analog human body, clothing, its basic principle is to use the microcomputer controlled closed-loop temperature automatic adjustment system to realize the simulation system of human finishing function, by simulating the heat between human body, clothing and the environment. The wet exchange process, and calculates the hot wet evaluation index of the garment according to the state parameters when the three are in a steady-state heat balance, thereby achieving the purpose of testing. The development of the warmer dummy began in the 1940s US Army Temperators developed the first-generation warm body dummy, which can only be used for general testing of clothing thermal resistance, through multi-sections of the 1960s, can simulate human body The second generation of warm body fake people in different attitudes, to the current third-generation warm body sweating holiday person, and its application range is also more wide.

Thermor dummy's simulation of the human body action attitude is also from the earliest static to the current motion gesture that can simulate the human body. Many countries will consider more activeness of the dummy when developing a warm body dummy. However, the current prostitute can be active research and development, usually in the fake person's shoulder, elbow, hip and ankle and other parts, still need to simulate the human motion of the human body with external strength, its joint Motion range and positioning use of a bearing friction, not scheduled, positioning, and quick-speed to accurately simulate a series of dynamics of the human body.

The combustion dummy is a combustion environment in laboratory conditions in a thermal flow, flame distribution, and duration, by detecting information about the skin surface of clothing and dummy, with corresponding The skin burns index will objectively quantitatively evaluate the extent of the body's burn and the overall thermal protection of protective clothing. Burning fake people originated in the 1962 US Navy's male dummy used to test the air of the Air Force's clothing, and the University of Minnesota, the University of Minnesota has also built an adult women who have 44 thermocouple sensors in the 1980s. By the end of the 1980s, Albert University, Canada has also developed a fake person similar to the Navy, and the dummy surface has 110 heat flow sensors. Recently, the most recent year is the combustion dummy system developed by the Northern Card State University and the Human Ecological Department of Albert University of Canada. The products developed can basically meet the evaluation of the overall performance of thermal protection clothing.

There are currently three ways to simulate human motion for the activeity of combustion fake people. The first method is to provide joints in the shoulders, elbows, hips, knee and ankle and other parts of the burning dummy, using bearing friction and external forces to simulate the various attits of the human body. This approach cannot be simulated for the timing of the human body dynamic. The second method is to simulate the reaction of the human body in the fire through the orbit and movable burner by means of a uniformly combustible fire environment. The limitations of this method are that the motion speed of the dummy's body is only equivalent to the heat flow of the body surface, and cannot react the human body actual in the actual situation of the human body.Condition.The third method is to develop a combustion model of the human legs by local dynamic regulation of dynamic simulation, Wallace and Amotz et al.The combustion model is provided with a shaft joint in the hip, knee and the ankle, and is used to simulate the body of the human body in the combustion environment. Safety protection performance in the motion state is used.However, this combustion model is limited to the local morphology of the human body, and cannot simulate the action of the entire human body.

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