نتایج جستجو برای: pressure field
تعداد نتایج: 1169801 فیلتر نتایج به سال:
Recent studies in solid composite propellants indicate that acceleration field cause to increase in burning rate. Relation between acceleration field and burning rate of propellant have an important effect on missile systems ballistic, especially on perforated grain missiles. If these effects has neglected in design phase, the pressure-time profile shifted out of acceptable rage and result in i...
In this work, we consider pressurized phase-field fracture problems in nearly and fully incompressible materials. To end, a mixed form for the solid equations is proposed. enhance accuracy of spatial discretization, residual-type error estimator developed. Our algorithmic advancements are substantiated with several numerical tests that inspired from benchmark configurations. Therein, primal-bas...
Using finite element nonlinear analysis, the dynamic soil pressure on perimeter retainingwalls of structures is investigated. Nonlinear Drucker Prager failure criterion is used to model the soilbehavior in the near field. The far field soil and the middle structure are assumed to behave as linearelastic materials. The soil-wall interface behavior is modeled incorporating nonlinear interfaceelem...
in this thesis our aim is to construct vector field in r3 for which the corresponding one-dimensional maps have certain discontinuities. two kinds of vector fields are considered, the first the lorenz vector field, and the second originally introced here. the latter have chaotic behavior and motivate a class of one-parameter families of maps which have positive lyapunov exponents for an open in...
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