Abstract This paper investigates plastic deformation of sheets at the roll-gap in complex rolling of sandwich sheets unbonding before rolling by Finite Element Simulation approaches. The effects of reduction, thickness ratio of inner layer and total thickness at the entrance, rolling force and exit curvature are discussed systematically. Furthermore, the FEM predictions are compared with experimental results and they are in good agreement. Sandwich sheets combined from aluminum and copper sheets are employed to carry out experiments of hot rolling of sandwich sheets. Further, at high temperature, the bonding strength decreases.

Thèse de doctorat : Mécanique : Metz : 2006. / Thèse soutenue sur ensemble de travaux. Bibliogr. p.107-111. liste des tabl. Liste de fig.

This bachelor thesis in mechanical engineering was performed during the spring2015 in collaboration with Composite Consulting Group in Laholm. TheComposites Consulting Group works mainly with design and details of differentcomposite projects, their main area is FE-calculations, 3D-modelling andmechanical tests with composite materials.The aim of this bachelor thesis was to simplify the calculation process of solidmechanics for sandwich panels by simulation with computer software. The goalwas to decrease the time for the design and calculation process of the constructionand the cost of the practical tests. Our task was to build a static three dimensionalmodel with the computer software Abaqus, where the result should correspondwith the practical pressure tests in laboratory.The project started with collection of material data from Composites ConsultingGroup and by learning the software Abaqus, simultaneously a specification wasdeveloped in corporation with the company. Later on, a static wheel pressuremodel in the software Abaqus was produced which simulated the behavior of thesandwich panel during static wheel-pressure by a pallet truck. The results from thewheel-pressure model were verified with the practical tests.The project led to a static three dimensional wheel- contact model with thesoftware Abaqus to calculate complex wheel-contact problems on sandwichpanels. The wheel-contact model corresponded to the practical test results. Thecontact model with Abaqus enabled faster and more efficient design anddevelopment process of new sandwich panels. It also provided better analysis ofthe sandwich panels’ behavior during wheel- contact loading.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1963. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 64-65).

Chemnitz, Techn. Univ., Diss., 2001. / Computerdatei im Fernzugriff.

Chemnitz, Techn. Univ., Diss., 2001. / Computerdatei im Fernzugriff.

Chemnitz, Techn. Universiẗat, Diss., 2001.

A new high order theory, referred to as the Extended High-Order Sandwich Panel Theory (EHSAPT), was formulated for orthotropic sandwich beams/wide panels with a general layout. This new theory accounts for the axial, transverse normal, and shear rigidity of the core. Validation of the present theory was performed for several structural analysis problems including: static loading, static instability (global buckling and wrinkling), free vibrations (natural frequencies), and dynamic loading (blast and impact). The accuracy of the theory was assessed by comparison with elasticity solutions and with experiment. It is shown that this new theory has superior accuracy over other available computational models, especially for sandwich beams/wide panel configurations with stiffer cores.

Thesis (Ph. D.)--University of Hong Kong, 1988.

Thesis (M.S.) in Mechanical Engineering--University of Maine, 2004. / Includes vita. Includes bibliographical references (leaves 124-125).