Design and process method for profile and structure of streamline locomotive
A technology of processing method and design method, applied in railway car body parts, calculation, railway car body and other directions, can solve the problems of high labor intensity and long production cycle, and achieve the effect of high work efficiency, simple process and shortened production cycle.
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[0019] Below in conjunction with accompanying drawing for further explanation:
[0020] ①The shape design method of the streamlined train head is to synthesize the input control points into a non-uniform rational spline NURBS (Non Uniform Rational B-splineSurface) curve to form the main shape line; These lines are dynamically modified in space to form a set of spatial network control lines; then these lines are disconnected in space and connected into three-dimensional surface patches; then these surface patches are tangent in space, The desired shape surface is formed. The generated contour surface is tested by various surface smoothing methods such as surface illumination, contour lines, and isocurvature lines to obtain the final contour surface. The final shape data can be obtained by positioning the surface with points or lines.
[0021] ②The design method of the head plate girder structure of a streamlined train is to determine the three-dimensional position of the plan...
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