Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechanics of Damage in Rate-Sensitive Construction Materials
Rate mechanisms govern the mechanical behavior of construction materials under three conditions: 1) at high homologous temperatures; 2) when subjected to short term loading that is quasi-static, impulsive, or vibratory; and 3) when subjected to sustained (or creep) loading over long times. Examples of advanced construction materials satisfying one or more of these conditions include: Polymer matrix structural composites such as FRPs; Single-ply roofing membranes made of elastomers; c) Polycrystalline ice in cold regions engineering; and d) Cementitious composites such as high-strength concretes and FRCs. The deformation and progressive failure of such rate sensitive materials is governed by three primary mechanisms: flow, distributed cracking, and localized crack propagation. The interaction of these mechanisms gives rise to complex mechanical behavior on the macro-scale. The characterization of these mechanisms and their interaction is therefore of fundamental importance. The objective of this research is to develop an understanding of and characterize the rate and damage processes and their interaction in advanced construction materials. This report presents: a multiaxial differential flow model; a rate and pressure sensitive anisotropic damage model; and, specification for testing materials. (kr)
Mechanics of Damage in Rate-Sensitive Construction Materials
Rate mechanisms govern the mechanical behavior of construction materials under three conditions: 1) at high homologous temperatures; 2) when subjected to short term loading that is quasi-static, impulsive, or vibratory; and 3) when subjected to sustained (or creep) loading over long times. Examples of advanced construction materials satisfying one or more of these conditions include: Polymer matrix structural composites such as FRPs; Single-ply roofing membranes made of elastomers; c) Polycrystalline ice in cold regions engineering; and d) Cementitious composites such as high-strength concretes and FRCs. The deformation and progressive failure of such rate sensitive materials is governed by three primary mechanisms: flow, distributed cracking, and localized crack propagation. The interaction of these mechanisms gives rise to complex mechanical behavior on the macro-scale. The characterization of these mechanisms and their interaction is therefore of fundamental importance. The objective of this research is to develop an understanding of and characterize the rate and damage processes and their interaction in advanced construction materials. This report presents: a multiaxial differential flow model; a rate and pressure sensitive anisotropic damage model; and, specification for testing materials. (kr)
Mechanics of Damage in Rate-Sensitive Construction Materials
W. S. Sunder (Autor:in) / M. Wu (Autor:in)
1987
120 pages
Report
Keine Angabe
Englisch
Construction Materials, Components, & Equipment , Structural Analyses , Construction Equipment, Materials, & Supplies , Construction materials , Damage assessment , Mechanical properties , Cements , Cold regions , Composite materials , Composite structures , Concrete , Crack propagation , Cracks , Creep , Deformation , Distribution , Elastomers , Engineering , Flow , High strength , Ice , Materials , Matrix materials , Anisotropy , Models , Polycrystalline , Polymers , Rates , Sensitivity
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