Hinge rotations

Damage Level Deformation Ratio Plastic Hinge Rotation... 

Compute the effective "bilinear" elastic stiffness and deflection to determine the natural period, ductility ratios, and hinge rotations/... 

Support Rotation - A measure of the blast absorbing capacity of a structural element. This is the same has hinge rotation except that the angle is computed at the member s support location. 

The plastic hinge nonlinear material model is easier to use but usually can not consider axial load effects. Plastic hinge locations must usually be predetermined and are usually limited to the ends of the member. Analysis results which include displacements and plastic hinge rotations which are directly comparable against acceptance criteria. ... 

To further examine the interactions between FMDV and neutralizing antibodies, the atomic structures of peptide—Fab complexes and the cryo-TEM structures of the Fab—virus complexes were determined [136]. In the image reconstructions, SD6 has a well-defined orientation on the virion surface whereas the density for 4C4 is extremely diffuse. One possible reason for this difference is that, while the RGD loop is in an extended conformation in the SD6 complex, a hinge rotation at the base of the loop may bring it closer to the capsid surface and stabilize the orientation. 

In nonlinear analysis, the action effects (as they are called in ECS) may be either forces or deformations. Eor ductile mechanisms (such as flexure in beams) the action effects are the deformations (for flexure, plastic hinge rotations or curvatures), while for brittle mechanisms (such as shear) the action effects are forces (shear forces in the structural elements). ECS gives some indications on how to check the seismic performance of a building based on nonlinear analysis results, but studies are still under way and a clear checking procedure is still missing. 

The amount of post-processing required for a given NRHA model is in some ways inversely related to the amount of rationalization and simplification that has gone into the modeled effort. For example, if URM walls are modeled with a discrete element approach (e.g., Fig. 2c) - wherein all bricks and their interaction are explicitly modeled - then crack widths can be evaluated explicitly, and the no collapse performance requirement can be checked by observation of the state of the model at the end of the analysis. In frame analyses - with 2D beam elements used for beams and columns - if monotonic and cyclic degradation are properly accounted for, collapse response can also be observed directly. More commonly, adequate performance of deformation-controlled elements is evaluated on the basis of observed peak plastic deformations (e.g., peak plastic hinge rotations in beams and columns, peak plastic axial deformation in braces, peak drifts in RC or URM walls) compared with allowable limits from published guidelines (e.g., those considered in section Published Codes, Standards and Guidelines )... 

Step 7 The response quantities of interest (displacements, plastic hinge rotations, forces in the piers) are evaluated by extracting from... 

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