design thickness
1.On the basis of analysis of design Criterion of shaft washer and housing washer of tandem composite type cylindrical roller thrust bearing, we present a mathematic model for optimal design in accordance with line contact requirement for cylindrical roller and race, design the washers thickness and thickness variation angle by the search algorithm of constrained stochastic direction.
4.After optimization of design,including increasing the thickness of septum to 15 mm and adding a shielding hat with radius of 200 mm and thickness of 10 mm,the ratios of transverse stray field to main field were 0.8‰(in y direction) and 0.36‰(in x direction). The results were satisfactory to the requirement of RCS beam dynamics.
7.The causation of main defects is analyzed from the view of design and improvements are suggested from the structural design, such as the test and determination of basic data of pavement design, rational selection of raw materials, adopting appropriate aggregate sizes, improving blend design method, rational selecting the thickness of asphalt layer and reinforcing the binding between the asphalt pavement layer and the base layer to further improve the operational function of the asphalt pavement and reduce the occurrence of traffic accidents.
