Lifetime-Oriented Structural Design Concepts- P19 potx

... inter- faces have been developed within the scope of reduction methods for large structural dynamic models and the design of single dynamical components of challenging structures. These methods ... popular model reduction method. The idea is to solve a subset of the 4.2 Numerical Methods 501 Structural Dynamics Modelling (FEM) Linear Components Nonlinear Components Model Reduction Subst...

Ngày tải lên: 01/07/2014, 11:20

... research Integrated design concepts Appropriate Quality Assurance for structural design, detailing and execution QA is a very important overhead necessity, also for lifetime-oriented design concepts, ... Fundamentals of Lifetime-Oriented Design 7 lifetimes. The progress in lifetime-oriented design concepts can contribute to an international harmonization of warranty law. 1.5...

Ngày tải lên: 01/07/2014, 10:43

... Materials It has been shown in Subsections 3.1.2.3, 3.1.2.3.2, 3.1.2.3.3, 3.1.2.2.2 that the main microstructural mechanisms of environamentally induced corrosion and deterioration processes are by now ... more or less heuristic evaluations of the degradation process and its influence on the residual structural safety. Recent progress in computational durability mechanics (see e.g. [75, 211,...

Ngày tải lên: 01/07/2014, 10:43

... inter- faces have been developed within the scope of reduction methods for large structural dynamic models and the design of single dynamical components of challenging structures. These methods ... and [107]). An interesting approach of an explicit-implicit multi time step method for nonlinear structural dynamics which prescribes the continuity of velocities at the interface and uses a...

Ngày tải lên: 01/07/2014, 10:43

... aforemen- tioned design variables, optimization criterion and constraints: • design variables x i ,i=1, 2, 3, ,n representing the vital parameters of a structural system, concentrated in the design vector ... reported here. 4.5 Optimization and Design Authored by Dietrich Hartmann As demonstrated in Section 4.1.4 structural design problems can be trans- formed into equivalent s...

Ngày tải lên: 01/07/2014, 10:43

... ex- amples are shown in the following chapters ranging from the lifetime-oriented analysis and design of beam-like structures over structural components used in the automobile industry up to concrete ... reinforced side-frame design and additional torsion bars, which are packaged at several locations in the convertible structure. 4.6 Application of Lifetime-Oriented Analysis and De...

Ngày tải lên: 01/07/2014, 10:43

... eliminate these nodes at the structural level by a static condensation technique to achieve a better condition of the matrices and a better perfor- mance at the structural level [245]. The number ... is indicated by the ratio of the total number of system nodes/dof. The structural efficiency and the combined fieldwise and structural efficiency for a truss structure is Eff u struc = NN u p,1...

Ngày tải lên: 01/07/2014, 11:20

... different strengths at the age of 28 days (solid lines) [193] 4.6 Application of Lifetime-Oriented Analysis and Design 631 E(f ck ) = 21500 ·  f ck +8 10  1 3 (4.432) f ct (f ck )=1.40 ·  f ck 10  2 3 (4.433) 4.6.5.1.5.3 ... distribution. ΔH(x, y, z) = ¯ Φ · ¯ Λ ¯ Λ = diag{λ 1 , , λ n } (4.436) 4.6 Application of Lifetime-Oriented Analysis and Design 641 Fig. 4.174. Cantilever bend...

Ngày tải lên: 01/07/2014, 11:20

... T. Bruhns · Dietrich Hartmann Rüdiger Höffer · Detlef Kuhl Günther Meschke (Eds.) Lifetime-Oriented Structural Design Concepts ABC XVI Contents 3.3.4.2.10 Finite ElementCalculations of the (Reduced)Static ... representing the fields of structural engineering, structural mechanics, soil mechanics, material sci- ence, and numerical mathematics introduced a research program on “lifetime...

Ngày tải lên: 01/07/2014, 10:43

... considered for realistic lifetime oriented design concepts especially with regard to the fatigue damage of structures and structural members. The basis of such design concepts is the realistic modelling ... Bridges Authored by Gerhard Hanswille For a realistic lifetime oriented design especially with regard to the fatigue damage of structures and structural members realistic models...

Ngày tải lên: 01/07/2014, 10:43