Crashworthiness Analysis and Enhancement of Aircraft Structures Under Vertical Impact Scenarios

Crashworthiness analysis of structures made from polymers

The numerical simulation of structural parts made from polymers is becoming increasingly important. Although highly sophisticated material laws are available in commercial finite element programs, there are still open questions, especially for crashworthiness analysis. In this paper, we restrict our attention to the explicit solver of LS-DYNA, see [1] and [2]. However, the results are transfera...

Crashworthiness Analysis and Energy Absorption Enhancement of a Passenger Rail Vehicle

Interests in increasing the trains’ speed of travel, generated higher degrees of wariness about the possible sever accidents. Since, the passenger wagon car body needs to be a safe compartment for its occupants therefore; great attention should be paid on its design.  In this study, a passenger car body that is originally made in Eastern Germany and its chassis are modeled to simulat...

Application of Numerical Methods for Crashworthiness Investigation of a Large Aircraft Wing Impact with a Tree

This paper demonstrates the application of a numerical methodology for a full-scale aircraft impact crashworthiness investigation. We studied the impact of an aircraft wing with a tree using LS-DYNA and ANSYS CFX. In particular, a detailed finite element model of the wing structure was represented as a box structure containing skin, spars and ribs, and fuel was represented as a distributed mass...

Uncertainty Investigation of Precipitation and Temperature Scenarios for the Sira Basin under Climate Change Impact

Results of assessment of the future climate change impacts is associated with some uncertainties. Considering the range of uncertainties increases reliability of the results. In this study, climate change impacts on daily precipitation, maximum and minimum temperature of Sira basin are assessed using LARS-WG model, for 2036-65 period. Accordingly, uncertainty of new emissions scenarios (RCP2.6،...

Dynamic Analysis of Single Piles Under Vertical Loads