巨型成形装备, 集中载荷, 叠层垫板结构, 变形协调

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Plate laminated composite structure is a key part of the heavy-duty forming equipment,which can transfer and diffuse the concentrated load evenly into body structure of the heavy-duty forming equipment to modify the state of stress of the whole equipment.However,the plate laminated composite structures designed by conventional structural strength method,often causes local concentration of load due to the deformation disagreement among the laminated plates and can not really realize evenly diffused transmission of the concentrated load.A three-dimensional finite element model of plate laminated composite structure,preloaded by bolts was built based on the Marc software platform.Via changing the whole height of such composite structure, different combinations of plate thicknesses and adjusting the distribution of preloaded bolts,the transmission rule of the force flow among laminated plates and their contact interfaces were studied.The concentrated load transfer uniformly among the laminated plates is realized.

heavy-duty forming equipment, concentrated load, plate laminated composite structure, deformation compatibility