conducted several series of ATD and cadaver tests to study and to evaluate the effects of head-supported mass (HSM) on neck injury risk during experimentally simulated rotary-wing aircraft impacts.
In many cases, the head and neck response were the focus of these studies.īass et al. Occupant response during rotary-wing aircraft crashes have been studied through full-scale, sled, and surrogate component-level experimental testing.
Due to the large investment required to produce these highly skilled pilots, as well as the obvious concern for loss of life or injury, it is very important that these individuals be protected in the event of crash. taxpayers as much as $2 million per pilot. Aviator training is a very time-consuming and expensive process, typically requiring 1.5–2.5 yr of preparation and costing U.S. Since WWII, rotary-wing aircraft have become a staple in all major military conflicts including the Korean War, Vietnam War, Gulf War, and the War on Terror. This loading distribution provides further insight into the biomechanical response of the neck during a rotary-wing aircraft impact. While only the upper and lower neck loading can be measured in the ATD, the shear force, axial force, and bending moment were reported for each level of the cervical spine in the human body model using a novel technique involving cross sections. The human body model simulation produced a more biofidelic head and neck response than the ATD experimental test and simulation, including change in neck curvature. The majority of the head and neck transducer time histories received a CORrelation and Analysis (CORA) rating of 0.7 or higher, indicating good overall correlation. The head and neck response of the ATD simulation was successfully validated against an experimental sled test. Lsreader-0.1.47-cp36-cp36m-manylinux2010_x86_64.A finite element (FE) simulation environment has been developed to investigate aviator head and neck response during a simulated rotary-wing aircraft impact using both an FE anthropomorphic test device (ATD) and an FE human body model. Files for lsreader, version 0.1.47 Filename, size If you're not sure which to choose, learn more about installing packages. The examples and documents for this project is available here.ĭownload the file for your platform. BINOUT_BRANCHES ) print ( branches ) ids = br. D3P_SHELL_STRESS, ist = 0, ipt = 1, ask_for_numpy_array = True ) print ( shell_stress ) # BinoutReader from lsreader import BinoutReader, BINOUT_DataType as bdt data_path = your / binout / file / path br = BinoutReader ( data_path ) branches = br.
D3P_NUM_SHELL, ipartset_user = ) # Get numpy array(numpy is required to be installed, using "pip install numpy") shell_stress = dr. D3P_SHELL_STRESS, ist = 4, ipt = 0, ipart_user = 4 ) # Get data by part set num_shells = dr. D3P_NUM_SOLID, ipart_user = 4 ) shell_stress_pid_4 = dr. D3P_NUM_SOLID ) print ( num_solid_element ) # Get d3plot data by part num_solid_pid_4 = dr.
D3P_SHELL_THICKNESS, ist = 11 ) print ( thickness ) num_solid_element = dr. D3P_SHELL_EFFECTIVE_PLASTIC_STRAIN, ist = 0, ipt = 1 ) print ( shell_eps ) thickness = dr. D3P_SHELL_STRESS, ist = 0, ipt = 1 ) print ( shell_stress.
How to use # D3plotReader from lsreader import D3plotReader, DataType as dt data_path = your / d3plot / file / path dr = D3plotReader ( data_path ) shell_stress = dr. More details please see LS-Reader Tutorial. For convenience, input parameters, like number of state, number of integration point, are designed as keyword arguments. The LS-Reader provides an uniform interface for getting these data. The LS-Reader is designed to read LS-DYNA results and can extract the data of more than 2000 such as stress, strain, id, history variable, effective plastic strain, number of elements, binout data and so on now.