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Butterfly metal films are widely used in pressure sensors, especially in the automotive air conditioning play a major role in the domain. Performance of such structures often depends on its capacity to the critical load jump occurs when the characteristics of instability, so how to correctly predict the stability of the critical force, has been a research and engineering staff are very concerned about the issue. Firstly, on the spherical membrane structure using ANSYS finite element analysis carried out. In this paper, spherical shell structure was intended to shell processing, discrete shell into the equivalent of a continuous shell. Then predict a continuous spherical shell post-buckling load formula used in single-layer spherical shell, spherical shell structure to predict the stability capacity. A typical example of the finite element analysis showed that the structure of the discrete shell after buckling load - displacement curve and the equivalent continuous shell limit load - displacement curve of the "platform" is quite close, indicating that indeed can use the formula derived to predict the stability of spherical shells carrying capacity. This not only expanded the scope of application of the formula derived, and provides an addition to using computers and sophisticated finite element analysis program, beyond the more accurately predict the structural stability of spherical shell effective way of carrying capacity.
Automotive air conditioning system control technology has been developed to automate the manual, automotive air conditioning system in which the unique requirements of the control elements (pressure switch) to a different state with the car running to align the vehicle to achieve the effect of energy conservation and comfort. Pressure switch inside the disc of metal film, which features jump instability plays an important role in automotive air conditioning systems can be realized work to maintain the indoor air-conditioned car (or heating) of the comfort, protection. Facts have proved that application of a dish of thin metal films air pressure switch, can run in the car to adjust the system to achieve optimum vehicle performance.
Key words: single-layer reticulated shells; finite element; instability; pressure switch switch

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Butterfly metal films are widely used in pressure sensors, especially in the automotive air conditioning play a major role in the domain. Performance of such structures often depends on its capacity to the critical load jump occurs when the characteristics of instability, so how to correctly predict the stability of the critical force, has been a research and engineering staff are very concerned about the issue. Firstly, on the spherical membrane structure using ANSYS finite element analysis carried out. In this paper, spherical shell structure was intended to shell processing, discrete shell into the equivalent of a continuous shell. Then predict a continuous spherical shell post-buckling load formula used in single-layer spherical shell, spherical shell structure to predict the stability capacity. A typical example of the finite element analysis showed that the structure of the discrete shell after buckling load - displacement curve and the equivalent continuous shell limit load - displacement curve of the "platform" is quite close, indicating that indeed can use the formula derived to predict the stability of spherical shells carrying capacity. This not only expanded the scope of application of the formula derived, and provides an addition to using computers and sophisticated finite element analysis program, beyond the more accurately predict the structural stability of spherical shell effective way of carrying capacity.
Automotive air conditioning system control technology has been developed to automate the manual, automotive air conditioning system in which the unique requirements of the control elements (pressure switch) to a different state with the car running to align the vehicle to achieve the effect of energy conservation and comfort. Pressure switch inside the disc of metal film, which features jump instability plays an important role in automotive air conditioning systems can be realized work to maintain the indoor air-conditioned car (or heating) of the comfort, protection. Facts have proved that application of a dish of thin metal films air pressure switch, can run in the car to adjust the system to achieve optimum vehicle performance.
Key words: single-layer reticulated shells; finite element; instability; pressure switch switch

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