Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Orthotropic Continuum Damage Models

In course

CIVIL-449: Nonlinear analysis of structures

This course deals with nonlinear modelling of structures under mechanical loading. ...

Description

This lecture covers the application of orthotropic continuum damage models in structural analysis, focusing on the behavior of materials under tension-compression states and the recovery of stiffness upon load-reversal. The instructor discusses different damage evolution laws, stress-strain curves, and the representation of cracks opening and closing under reverse loading. Examples of damage origin in a church are presented, along with the use of orthotropic models to simulate concrete and masonry behavior. The lecture also touches on the combination of damage-plasticity models and the importance of including irreversible deformations in the analysis.

Official source

Ontological neighbourhood

Chemical engineering

Materials science: Deformation of materials

Related concepts (32)

Deformation (engineering)

In engineering, deformation refers to the change in size or shape of an object. Displacements are the absolute change in position of a point on the object. Deflection is the relative change in external displacements on an object. Strain is the relative internal change in shape of an infinitesimally small cube of material and can be expressed as a non-dimensional change in length or angle of distortion of the cube. Strains are related to the forces acting on the cube, which are known as stress, by a stress-strain curve.

Stress–strain curve

In engineering and materials science, a stress–strain curve for a material gives the relationship between stress and strain. It is obtained by gradually applying load to a test coupon and measuring the deformation, from which the stress and strain can be determined (see tensile testing). These curves reveal many of the properties of a material, such as the Young's modulus, the yield strength and the ultimate tensile strength. Generally speaking, curves representing the relationship between stress and strain in any form of deformation can be regarded as stress–strain curves.

Solid mechanics

Solid mechanics (also known as mechanics of solids) is the branch of continuum mechanics that studies the behavior of solid materials, especially their motion and deformation under the action of forces, temperature changes, phase changes, and other external or internal agents. Solid mechanics is fundamental for civil, aerospace, nuclear, biomedical and mechanical engineering, for geology, and for many branches of physics and chemistry such as materials science.

Plasticity (physics)

In physics and materials science, plasticity (also known as plastic deformation) is the ability of a solid material to undergo permanent deformation, a non-reversible change of shape in response to applied forces. For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes occur within the material itself. In engineering, the transition from elastic behavior to plastic behavior is known as yielding. Plastic deformation is observed in most materials, particularly metals, soils, rocks, concrete, and foams.

Infinitesimal strain theory

In continuum mechanics, the infinitesimal strain theory is a mathematical approach to the description of the deformation of a solid body in which the displacements of the material particles are assumed to be much smaller (indeed, infinitesimally smaller) than any relevant dimension of the body; so that its geometry and the constitutive properties of the material (such as density and stiffness) at each point of space can be assumed to be unchanged by the deformation.

Related lectures (47)

Smeared Crack Approach Models & Mesh Dependency

Explores smeared crack models, strain localization, and mesh dependency in structural analysis, emphasizing crack simulation hypotheses and stress-strain relationships.

Flexible Probes: Mechanics and Design

Explores critical strain, bending mechanics, and strain calculation in flexible probes.

Elasticity and Deformation

Covers stress, strain, modulus of elasticity, and material behavior under different loads.

Introduction to Structural Mechanics Log in to Mediaspace to watch this video

Covers the basics of structural mechanics, including static forces, stress, strain, and structural elements like bars, cables, trusses, and beams.

Structural Mechanics Fundamentals Log in to Mediaspace to watch this video