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Showing 1 to 20 of 20 for “"Dynamic relaxation"”.
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Dynamic relaxation analysis of pretensioned networks supported by compression arches
… of direct integration methods, particularly Dynamic Relaxation, to the nonlinear formfinding and analysis of pretensioned networks supported by compression arches. The development and application of such methods is reviewed in Chapter 2. The automated control of Dynamic Relaxation is …
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Form finding and analysis of tension space structures by dynamic relaxation
… respectively to static analysis, form: -finding, dynamic analy1sis, and the development and mathematical basis of dynamic relaxation. References in these appendices and the introduction (chapter 1) are contained in the main bibliography, appendix E.
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The application of dynamic relaxation to the design of modular space structures
… computer design methods. 3: A comparison of a dynamic relaxation method, for the formfinding of modularly constrained structures subject to a dominant design loading case, with linear programming and fully stressed design methods. This comparison shows that the dynamic relaxation method is …
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Algoritmos de relaxação dinâmica adaptativa para a análise elastoplástica de estruturas tridimensionais
This work presents some dynamic relaxation adaptive algorithms applied to the analysis of structures by the Finite Element Method (isoparametric three-dimensional elements). These algorithms allow for both linear or non-linear analysis, considering plasticity and large displacement effects. Finally …
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Tensegrity space structures : static, kinematic and stability behaviour
… systems including form-finding and analysis. The dynamic relaxation method is employed to develop a software solution for the design and analysis of tensegrity systems with a focus on its application to irregular forms. This method employs an iterative finite difference approach to integrate nodal …
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Evaluation of the residual prestress force in aged railway concrete sleepers considered for reuse
… of concrete sleepers post-design life using the dynamic relaxation method. The study involved sampling 21 P2 concrete sleepers, comprising eighteen old sleepers (manufactured in 1977) and three new sleepers (manufactured in 2006). Six of the 21 sleepers were used to determine compressive and …
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Nonlinear analysis of cable structures
… an Orthogonal Trajectory Accession method, and a Dynamic Relaxation approach. An extension of this investigation is a comparison between the Riks-Wempner method and Orthogonal Trajectory Accession.
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An axisymmetric finite element solution for elastic wave propagation through threaded connections
… the threaded sleeve onto the rods. A new dynamic relaxation damping scheme is used which starts with an undamped model and then increases the damping until the solution converges. This method converges more rapidly than the standard constant damping.
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Numerical analysis of elastic membrane structures subjected to hydrostatic pressure loading
… Density. The numerical procedure is based on the Dynamic Relaxation Method. This is an explicit, iterative technique in which the static solution is obtained as the steady state part of the damped dynamic response of the structure. The numerical scheme is constructed by applying Green's theorem …
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Chemical Correlation of Magnetic Permeability and Microwave Absorption in Spinel Ferrite Nanoparticles
… from cobalt's strong spin-orbit coupling and dynamic relaxation behavior. Rare-earth doped studies confirmed that such emission is specific to Co²⁺ environments and not solely due to spin-orbit strength. These results clarify how chemical composition modifications and nanoscale tuning governs …
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A Quadratic Non-Linear Elasticity Formulation for the Dynamic Behaviour of Fluid-Loaded Structures
… achieved by means of a fixed-point solver with dynamic relaxation. The fluid-structure interaction approaches are validated and compared on benchmark problems of increasing complexity and strength of coupling between the fluid and solid domains. Fluid-structure interaction systems may become …
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Mechanochemical Understanding of Metal-Coordinated Polymers Using Simulation and Experiment
… to reform after rupture, thereby enabling dynamic, tunable, and reversible (self-healing) mechanical properties. Several biological organisms, such as marine mussels (Mytilus) and marine worm jaws (Nereis virens), have been found to take advantage of these unique properties of …
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A Lagrangian, Discontinuous-Galerkin Material Response Solver for the Analysis of Ablative Thermal Protection Systems
… aerospace vehicles from the intense aerodynamic heating encountered during hypersonic flight. One category of TPS materials manages extreme heat through pyrolysis, a process in which the elevated temperatures trigger an endothermic reaction that decomposes the material into char and …
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Efficient and robust partitioned solution schemes for fluid-structure interactions
… method, and fixed point iterations with dynamic relaxation. Partitioned, incompressible FSI, based on Dirichlet-Neumann domain decomposition solution schemes, cannot be applied to problems where the fluid domain is fully enclosed. A simple example often provided in the literature is that …
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Computer-aided design of tension structures
… an area which requires special attention is the dynamic response often initiated by the action of a natural wind. In Part III (chapters 8 and 9), this area is examined in detail and a strategy is proposed to give an improved modelling of dynamic response. The numerical procedure developed is …
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Design of an aluminum plate-based tensegrity bike parking canopy
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Crystallization and structure-property investigations of semicrystalline poly(arylene ether) based polymers
… followed by a combination of thermal analysis, dynamic relaxation methods, and x-ray scattering. Increasing crystallization temperatures caused a decrease in the glass transition temperature, an increase in the degree of crystallinity, and increases in both the average lamellar and amorphous …
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Characterization and control of deployable origami structure towards a sustainable built environment
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Deployable ground anchors: Analysis for coastal resilience applications
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Wind loading and dynamic response of air-supported roof structures
… values of wind loading and predicting dynamic response of air-supported structures subject to suddenly applied loads. Wind loading on air-supported structures is a phenomenon involving significant mutual interaction between inertial, elastic and aerodynamic forces. The aerodynamic …