Marine Structural Design Episode 14 potx

... of marine structural design have been developed: Level 1: Design by rules Level 2: Design by analysis Level 3: Design based on performance standards Until the 1970’s, structural design ... combinations is the first step in marine structural design. For structural design and analysis, a structural engineer needs to have basic concepts of waves, motions and...

Ngày tải lên: 14/03/2014, 16:20

... 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, ... 281 3 .140 Evolution ofthestiffness components in the principle directions 282 3 .141 Specimen geometry anddifferent mesh patterns 283 3 .142 Load-cyclecurves fordifferent mesh patterns 2...

Ngày tải lên: 01/07/2014, 10:43

... =323K κ c /c 0 φ 0.0 0.725 0.2 0.497 0.4 0.457 0.6 0.430 0.8 0. 414 1.0 0.200 c 0 5 10 15 20 25 φD 0 0 2 6 8 κ c c 0 0.0 0.2 0.8 1.0 Fig. 3 .144 . Conductivity of the pore fluid D 0 [10 −10 m 2 /s] as ... degradation process and its influence on the residual structural safety. Recent progress in computational durability mechanics (see e.g. [75, 211, 800, 798, 214] ), to- gether with appropri...

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

... only does not lead to any kind of structural damage. That is changing when drying phase I is applied. Because of the combined loading of dead load and drying, structural damage in the form of ... environmental influences, like moisture or heat effects, may result in an overestimation of the structural safety, because structural damage due to additional environmental influences can not be...

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

... 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 ... Square Section Young’s Modulus Density (b×h) [ mm × mm ] [N/mm 2 ] [kg/dm 3 ] Girder (lin) 240 × 140 0 205000 1.81 Arch (lin) 700 × 600 198000 1.88 Hanger (nl) 100 × 100 181000 7.46 A B C Fig....

Ngày tải lên: 01/07/2014, 11:20

... and Design 619 Table 4.17. Dynamic elastic moduli E dyn (mean) and their standard deviations (SD) of the concrete after a service life of 50 years for the different members of the bridge structural ... their standard deviations (SD) after a service life of 50 years for the different structural members of the bridge structural member number of specimens E stat SD ε u SD f c SD [-] [N/mm...

Ngày tải lên: 01/07/2014, 11:20

... deformation, 6,, can be written as and finally Thus the probability of plastic contact is 14 Tribology in machine design 2.2. Contact between bodies in relative motion A,= axb (nominal contact ... engineering. The inclusion of the basic principles of tribology, as well as tribodesign, within an engineering design course generally does not place too great an additional burden...

Ngày tải lên: 13/08/2014, 05:21

Ngày tải lên: 13/08/2014, 05:22