model elastomeric bearing in midas civil

The coupling of the two shear springs is considered directly by using a coupled bidirectional model. The general form of element force vector, The degrees of freedom and discrete spring representation of an elastomeric bearing is shown in the below figures. The two nodes are connected by six springs that represent the mechanical behavior in the six basic directions of a bearing. The physical model of an elastomeric bearing is considered as a two-node, twelve degrees-of-freedom discrete element.

2 Consideration of characteristics to include under extreme loading.1 Physical Model and Mechanical Properties.

User should distinguish between yield strength of elastomeric bearing (Fy) and characteristic strength (Qd): Qd=Fy*(1-alpha) Tag to include vertical stiffness variation (optional, default = 0)īecause default values of heating parameters are in SI units, user must override the default heating parameters values if using Imperial units Tag to include horizontal stiffness variation (optional, default = 0) Tag to include buckling load variation (optional, default = 0) Tag to include cavitation and post-cavitation (optional, default = 0) Viscous damping parameter (optional, default = 0.0)Ĭover thickness (optional, default = 0.0) Shear distance from iNode as a fraction of the element length (optional, default = 0.5) Strength reduction parameter (optional, default = 1.0) Vector components in global coordinates defining local y-axis (optional)Ĭavitation parameter (optional, default = 10.0)ĭamage parameter (optional, default = 0.5) Vector components in global coordinates defining local x-axis (optional)

Outer diameter (excluding cover thickness) The time-dependent values of mechanical properties (e.g., shear stiffness, buckling load capacity) can also be recorded using the 'parameters' recorder.Įlement ElastomericX $eleTag $Nd1 $Nd2 $Fy $alpha $Gr $Kbulk $D1 $D2 $ts $tr $n $y1 $y2 $圓> The material models in six direction are formulated within the element from input arguments. However, instead of the user providing material models as input arguments, it only requires geometric and material properties of an elastomeric bearing as arguments. This elements extends the formulation of Elastomeric_Bearing_(Bouc-Wen)_Element element. The 3D continuum geometry of an elastomeric bearing is modeled as a 2-node, 12 DOF discrete element. This command is used to construct an ElastomericX bearing element object in three-dimension.

Model elastomeric bearing in midas civil