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  2. Hooke's law - Wikipedia

    en.wikipedia.org/wiki/Hooke's_law

    In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.

  3. Orthotropic material - Wikipedia

    en.wikipedia.org/wiki/Orthotropic_material

    Hooke's law for orthotropic materials This page was last edited on 1 November 2024, at 14:22 (UTC). Text is available under the Creative Commons Attribution ...

  4. Constitutive equation - Wikipedia

    en.wikipedia.org/wiki/Constitutive_equation

    The first constitutive equation (constitutive law) was developed by Robert Hooke and is known as Hooke's law.It deals with the case of linear elastic materials.Following this discovery, this type of equation, often called a "stress-strain relation" in this example, but also called a "constitutive assumption" or an "equation of state" was commonly used.

  5. Spring (device) - Wikipedia

    en.wikipedia.org/wiki/Spring_(device)

    In 1676 British physicist Robert Hooke postulated Hooke's law, which states that the force a spring exerts is proportional to its extension. On March 8, 1850, John Evans, Founder of John Evans' Sons, Incorporated, opened his business in New Haven, Connecticut, manufacturing flat springs for carriages and other vehicles, as well as the machinery ...

  6. Bulk modulus - Wikipedia

    en.wikipedia.org/wiki/Bulk_modulus

    For a complex anisotropic solid such as wood or paper, these three moduli do not contain enough information to describe its behaviour, and one must use the full generalized Hooke's law. The reciprocal of the bulk modulus at fixed temperature is called the isothermal compressibility.

  7. Series and parallel springs - Wikipedia

    en.wikipedia.org/wiki/Series_and_parallel_springs

    Equivalent Spring Constant (Series) When putting two springs in their equilibrium positions in series attached at the end to a block and then displacing it from that equilibrium, each of the springs will experience corresponding displacements x 1 and x 2 for a total displacement of x 1 + x 2.

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  9. Flow plasticity theory - Wikipedia

    en.wikipedia.org/wiki/Flow_plasticity_theory

    Elasticity (Hooke's law). In the linear elastic regime the stresses and strains in the material are related by =: where the stiffness matrix is constant. Elastic limit (Yield surface). The elastic limit is defined by a yield surface that does not depend on the plastic strain and has the form