https://puma.ub.uni-stuttgart.de/group/simtech/method%7DPUMA RSS feed for /group/simtech/method%7D2026-04-21T19:03:27+02:00https://puma.ub.uni-stuttgart.de/bibtex/24ad0d7a01b29554c1add6721d17c4c9f/hermannhermann2017-05-18T11:32:12+02:00Finite (CLT); Compression Shear Spruce shear (Picea analysis; (Fagus abies); Rolling gamma-Method; method} {Cross-laminated analogy sylvatica); Beech element Bending test; timber wood strength; modulus; <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simon Aicher" itemprop="url" href="/person/1201f166932d880d63991d3876b9f56c0/author/0"><span itemprop="name">S. Aicher</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Maren Hirsch" itemprop="url" href="/person/1201f166932d880d63991d3876b9f56c0/author/1"><span itemprop="name">M. Hirsch</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Zachary Christian" itemprop="url" href="/person/1201f166932d880d63991d3876b9f56c0/author/2"><span itemprop="name">Z. Christian</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">CONSTRUCTION AND BUILDING MATERIALS</span>, </em> </span>(<em><span>October 2016<meta content="October 2016" itemprop="datePublished"/></span></em>)</span>Thu May 18 11:32:12 CEST 2017{THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND}{CONSTRUCTION AND BUILDING MATERIALS}{OCT 15}{1007-1018}{Hybrid cross-laminated timber plates with beech wood cross-layers}{Article}{124}{2016}Finite (CLT); Compression Shear Spruce shear (Picea analysis; (Fagus abies); Rolling gamma-Method; method} {Cross-laminated analogy sylvatica); Beech element Bending test; timber wood strength; modulus; {A hybrid, three-layered, softwood-hardwood cross-laminated timber build-up with outer layers of European spruce (Picea abies) and a center cross-layer of European beech (Fagus sylvatica) has been investigated with regard to out-of-plane bending. The determination of the rolling shear properties of the beech cross-layer performed by different test and measurement methods comprising bending and compression shear tests was of primary interest. The shear capacity of the composite is significantly influenced by the spruce longitudinal shear strength at the beech-spruce interface. The characteristic values of rolling shear modulus and strength of the beech cross-layer from the bending tests were G(r), mean = 350 N/mm(2) and f(v,r,05) = 2.6 N/mm(2), respectively. Direct strain gauge measurements and compression shear tests resulted in 10-20\% higher values. The high rolling shear properties render the shear lag implications of the softwood CLTs to a negligible quantity. The hybrid build-up can be designed as a rigid composite with small error versus a more exact analysis. The novel investigations reveal the great potential of mixed softwood-hardwood CLT build-ups for structural elements in the building sector, (C) 2016 Elsevier Ltd. All rights reserved.}https://puma.ub.uni-stuttgart.de/bibtex/2cffcf9b4d25fbc122de56edd6f23f805/hermannhermann2017-05-18T11:32:12+02:00Finite Uncertainty Polynomial quantification; chaos; Hybrid method} projection; Galerkin volume Galerkin; stochastic model; {Clarifier-thickener <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Andrea Barth" itemprop="url" href="/person/1158d6d69825141720526007acae4fa2b/author/0"><span itemprop="name">A. Barth</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Raimund Burger" itemprop="url" href="/person/1158d6d69825141720526007acae4fa2b/author/1"><span itemprop="name">R. Burger</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Ilja Kroeker" itemprop="url" href="/person/1158d6d69825141720526007acae4fa2b/author/2"><span itemprop="name">I. Kroeker</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Christian Rohde" itemprop="url" href="/person/1158d6d69825141720526007acae4fa2b/author/3"><span itemprop="name">C. Rohde</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">COMPUTERS &amp; CHEMICAL ENGINEERING</span>, </em> </span>(<em><span>June 2016<meta content="June 2016" itemprop="datePublished"/></span></em>)</span>Thu May 18 11:32:12 CEST 2017{THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}{COMPUTERS \& CHEMICAL ENGINEERING}{JUN 9}{11-26}{Computational uncertainty quantification for a clarifier-thickener model with several random perturbations: A hybrid stochastic Galerkin approach}{Article}{89}{2016}Finite Uncertainty Polynomial quantification; chaos; Hybrid method} projection; Galerkin volume Galerkin; stochastic model; {Clarifier-thickener {Continuous sedimentation processes in a clarifier-thickener unit can be described by a scalar nonlinear conservation law whose flux density function is discontinuous with respect to the spatial position. In the applications of this model, which include mineral processing and wastewater treatment, the rate and composition of the feed flow cannot be given deterministically. Efficient numerical simulation is required to quantify the effect of uncertainty in these control parameters in terms of the response of the clarifier thickener system. Thus, the problem at hand is one of uncertainty quantification for nonlinear hyperbolic problems with several random perturbations. The presented hybrid stochastic Galerkin method is devised so as to extend the polynomial chaos approximation by multiresolution discretization in the stochastic space. This approach leads to a deterministic hyperbolic system, which is partially decoupled and therefore suitable for efficient parallelisation. Stochastic adaptivity reduces the computational effort. Several numerical experiments are presented. (C) 2016 Elsevier Ltd. All rights reserved.}https://puma.ub.uni-stuttgart.de/bibtex/2504fc9cccbcc450523cb5d98dd60a126/hermannhermann2017-05-18T11:32:12+02:00Finite methods control; for Numerical differential method} Singular equations; distribution; stochastic element {Dividend partial <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Andrea Barth" itemprop="url" href="/person/1ff9e17455504f09babc5aa7b043ed09e/author/0"><span itemprop="name">A. Barth</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Santiago Moreno-Bromberg" itemprop="url" href="/person/1ff9e17455504f09babc5aa7b043ed09e/author/1"><span itemprop="name">S. Moreno-Bromberg</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Oleg Reichmann" itemprop="url" href="/person/1ff9e17455504f09babc5aa7b043ed09e/author/2"><span itemprop="name">O. Reichmann</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">COMPUTATIONAL ECONOMICS</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">47 </span></span>(<span itemprop="issueNumber">3</span>): <span itemprop="pagination">447-472</span></em> </span>(<em><span>March 2016<meta content="March 2016" itemprop="datePublished"/></span></em>)</span>Thu May 18 11:32:12 CEST 2017{VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS}{COMPUTATIONAL ECONOMICS}{MAR}{3}{447-472}{A Non-stationary Model of Dividend Distribution in a Stochastic Interest-Rate Setting}{Article}{47}{2016}Finite methods control; for Numerical differential method} Singular equations; distribution; stochastic element {Dividend partial {In this paper the solutions to several variants of the so-called dividend-distribution problem in a multi-dimensional, diffusion setting are studied. In a nutshell, the manager of a firm must balance the retention of earnings (so as to ward off bankruptcy and earn interest) and the distribution of dividends (so as to please the shareholders). A dynamic-programming approach is used, where the state variables are the current levels of cash reserves and of the stochastic short-rate, as well as time. This results in a family of Hamilton-Jacobi-Bellman variational inequalities whose solutions must be approximated numerically. To do so, a finite element approximation and a time-marching scheme are employed.}