Viscoelastic behaviors are common in polymers, composites, geological materials, biomaterials, and even metals. Viscoelastic mechanics focus on the time-dependent mechanical characteristics, constitutive relation, and failure process of these materials. Viscoelastic material shows itself in various ways, such as creep, relaxation, hysteresis, and mechanical loss. Hysteresis and mechanical loss are the dynamic viscoelastic phenomena, creep and stress relaxation are static viscoelastic phenomena. The failure of viscoelastic materials shows obvious "time effect" and "temperature effect". It is difficult to prevent catastrophic accidents caused by sudden delayed fracture of viscoelastic materials under long-term loading or extreme conditions (such as high temperature, high-stress level). Therefore, it is inadequate to consider only the static properties of component materials in structural design. However, the literature and design standards of some new viscoelastic materials are not sufficient, which brings great challenges to their engineering applications. Therefore, it is urgent to find practical constitutive models and effective calculation methods to solve the viscoelastic problems.

This collection aims to collate current experimental or simulation work on mechanical properties and mechanical modeling of viscoelastic behavior. This collection will be a useful resource for researchers and engineers to obtain a better understanding of the viscoelastic behavior, which can help predict the long-term performance and dimensional stability of structures.