bulkdeformation
Bulk deformation refers to the deformation experienced by the interior of a solid body under external loading, as opposed to deformations confined to surfaces, interfaces, or localized regions. In continuum mechanics, bulk deformation encompasses changes in both volume and shape within the material’s volume and is described by the strain field that relates displacements to deformation. It can be elastic, where the material returns to its original state after unloading, or plastic, where permanent changes remain.
A key distinction is between volumetric (dilatational) changes and shape changes. The volumetric part of deformation
Measurement and modeling of bulk deformation rely on displacement fields and strain analysis. Experimental techniques include
Applications span metal forming processes (rolling, extrusion, forging) and structural components where bulk response governs performance.