Abstract
Full-metal vibroinsulators with circular elements are widely spread and effectively reduce a harmful impact of vibration in mechanical systems. However, in a contemporary literature an issue of a regulation of that kind of vibroinsulators and their study, considering non-linearity of the characteristics, is addressed insufficiently. In the presented study by a joint implementation of Mohr's method and finite element method the method of a calculation of loading characteristics of adjustable full-metal vibroinsulators with elastic elements in the form of an ellipse and a system of two ellipses was developed. Broad (in a few hundreds of times) capabilities to regulate their rigidity characteristics were demonstrated. The presence of zone of quasi-zero rigidity is detected. The method allows to accurately determine parameters of a vibroinsulator, which increases quality of final products.
Highlights
Modern full-metal vibroinsulators belong to devices that sustain significant strains during their operation, which are commensurable with a size of elastic elements (Nurkan, et al, 2006, Ao, et al, 2005, Ulanov, et al, 2009)
A large number of vibroinsulator's structural arrangements made from MR material, metal cables, packs of tapes with elastic elements contours in them in a form of arcs of circles (Ao, et al 2006, Belоusоv, et al, 2009, Jiang, et al, 2008)
Elastic elements in the specified vibroinsulators are flexible rings or parts of rings with friction distributed within their volume (Pоnоmаrev, 2003)
Summary
Modern full-metal vibroinsulators belong to devices that sustain significant strains during their operation, which are commensurable with a size of elastic elements (Nurkan, et al, 2006, Ao, et al, 2005, Ulanov, et al, 2009). In those circumstances there is a substantially non-linear dependence of large displacements from external forces, a material of elastic elements of vibroinsulator behaves elastically because of small strains (Ulanov and Ponomarev, 2009, Popp, et al, 2003). Elastic elements in the specified vibroinsulators are flexible rings or parts of rings with friction distributed within their volume (Pоnоmаrev, 2003). Popov and others. (Ponomarev, 2003, Popov, 1986)
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