The optimization of the position of the gas spring bearing is known from the structural characteristics of the gas spring. The working stroke and supporting force of the gas spring are the main parameters affecting its performance. To this end, this paper uses VB to develop an optimal layout system for the passenger door gas spring bearing to optimize the position of the gas spring bearing to meet the target function of the gas spring working parameter. The user can input the necessary structural parameters in the interactive window provided by the system, and then the system optimizes the position of the output gas spring fixed support and the corresponding gas spring parameters. The basic idea of ​​optimization is: the user inputs the initially selected gas spring parameters and the possible arrangement range of the support, and the computer automatically searches for the gas spring support force FS actually required in the entire gas spring working stroke and the support force FN actually provided by the gas spring. The closest bearing coordinate value is the bearing coordinate value that minimizes 2 (FS-FN) over the entire gas spring working stroke. The optimized mathematical model is as follows: the coordinates of the O3 point in the xoy coordinate system are the design variables, ie the design variable x=x1x2=xyminf(x1,x2)=2(FS-FN)s.tl1Fx1Fl2;l3Fx2Fl4F1minFFmin,F2maxFFmax;Lmax -LminFLxc where l1, l2, l3, l4 are the range of the bearing input by the user; Fmax, Fmin is the maximum and minimum supporting force of the primary selected gas spring; Lxc is the working stroke of the primary selected gas spring. When the coordinates of O3 are: x0=-100mm, y0=490mm, the working stroke of the gas spring is Lmax-Lmin=187.3mm; the maximum supporting force of the gas spring is Fmax=2831.8N; the minimum supporting force of the gas spring is Fmin=215.3N , 2 (FS-FN) = 29679. The force function of the gas spring is a linear function, and the above structural parameters are input into the optimization software, and the initial gas spring parameters are Fmax=3000N, Fmin=500N, Lxc=190mm, Lmax=570mm, which is obtained at x0=(-50～- When 150)mm, y0=(450～550)mm, the optimized coordinates of O3 are x0=-52mm, y0=509mm. At this time, the working stroke of the gas spring is Lmax-Lmin=176mm; the maximum supporting force of the gas spring is Fmax=2006N; the minimum supporting force of the gas spring is Fmin=158N, 2(FS-FN)=26188N. The optimized 2(FS- FN) is 11.8% lower than the empirically determined initial position 2 (FS-FN). It can be seen from the above example that using the optimization software to optimize the position of the gas spring support can significantly reduce the force required by the driver when the door is opened, thereby improving the portability of the switch door. At the same time, the software can also easily check the selection of gas springs, providing a theoretical basis for designers to choose gas springs reasonably. FHM fence factory could provide a variety of Temporary Fencing such as crowed control barrier,Chain Link Fence temporary fence,welded wire temporary fence. Our fence is exporting to Canada ,Austrilia and west Europe.The important features of Temporaty Portable Fence are easy installation and mobility. The surface treatment is coated by electric galvanization + polyester powder or electric galvanization. You can see Portable Fence everywhere in construction site, temporary protection, major sports events or activities, temporary isolation, quarantine station in the airport, large play-grounds etc. Temporary Fencing Temporary Fencing,Livestock Fencing,Temp Fencing,Temporary Security Fencing DINGZHOU FEIHONG METAL MESH LIMITED , http://www.fhmfencing.com