ADINA System 9.2.3 This section lists the new and updated features that are available in ADINA System 9.2, as com pared with ADINA System 9.1.3 . (For features and improvemen ts added between 9.2 and 9.2.3, see the section “Improvements between 9.2.0 and 9.2.3” b elow.) There are new commands and new and changed parameters associate d with the new and updated features. The release not es refer to the commands and p arameters in the command- line formats. Further informati on about the new commands and new and changed parameters can be found in the AUI Command Reference Manuals. For user interface users, most command-line parameters have analogous fields in the dialog boxes. Note, when we refer to documentation, we refer to the versions of the documentation given below in the “Available Documentation” section. Features for all programs Table of supported program versions Platform Operating system Fortran compiler Linux x86_64 2.6.18 and higher, glibc 2.5 and higher, gcc 4.1.2 and higher Intel ifort 11.1 Linux 86_64, AVX extensions 2.6.32 and higher, glibc 2.12 and higher, gcc 4.4.6 and higher Intel ifort 14.0.4 Windows x86_64 Windows XP, Vista, 7, 8, 8.1, 10 Intel Visual Fortran 11 Windows x86_64, AVX extensions Windows 7, 8, 8.1, 10 Intel Visual Fortran 14 1) All program versions are 64- bit, using the x86_64 architecture. T he Intel 64 and AMD Opteron im plementations of th e x86_64 architecture are supporte d. The AVX extensions are supported, as described in detail below. New and updated feature summary 4 ADINA System 9.2 Release Notes AVX extensions Recent Intel and AMD CPUs suppor t the AVX (advanced vector exte nsions) instructions in the x86_64 instruction set. The ADINA 9.2 executables for the solvers (ADINA Structures, ADINA Thermal, ADINA CFD/EM, ADINA FSI, ADINA TMC) now use the AVX extensions, as described below. Depending upon the computer and th e problem to be solved, the executables that use the AVX extension can run up to 30% more quickly than executables that don’t use the AVX extension. Linux versions One way to check to see if a c omputer supports AVX is to search for the string “ avx ” within the file /proc/cpuinfo . If the string is not found, t he computer does not support the AVX extensions; if the string is found, the computer supports the A VX extensions. Two versions of the ADINA executa bles are supplied, one version that does not use the AVX extensions, and one version that uses the AVX extensions. Duri ng installation, if the computer supports AVX, the AVX ve rsion is installed by default, and if the computer does not support AVX, the non-AVX version installed by default. You can override the defaults during installation. At run-time, the ADINA command scripts check to see if the AVX extensions are supported on the computer. If the AVX exte nsions are not supported, the n on-AVX executables are automatically used by default, a nd if the AVX extensions are supported, the AVX executables are automatically used by default. If a computer supports the AVX extension, and you do not want t o use the AVX executables, use the -noavx flag, for example adina9.2 -noavx ... If the solver program is run th rough the user interface (either through the AUI or using the ai9.2 script), a check button is available in the Settings window to run the non-AVX version on a computer that supports AVX. Windows versions The installation package contains both the AVX and non-AVX vers ions. During installation, the computer is checked to see if AVX is supported. If AVX is s upported, the AVX version is installed. Otherwise, the non-AVX version is installed. New and updated feature summary ADINA System 9.2 Release Notes 5 ADINA Solids & Structures features Improvements to low-speed dynamics The program can now autom atically switch to low-speed dynamics at no convergence, for specific element groups. The low-speed dynamics inertia f actor (LSMASSF) can now be grea ter than 1.  Command-line: AUTOMATIC TIME-STEPPING LSTIME Improvements to energy calculations The following improvements are made to energy calculations: The out-of-core solver is now supported. Contact compliance energy is improved. Contact damping energy is improved. Improvements to 3D plane stress element The 3D plane stress element (membrane element) can now be initi ally warped. Improvements to mesh glueing The gluing constraint functions a re changed slightly when there are several glued surfaces that intersect. 3D plane stress elemen ts can be used in the glueing of 3D surfaces. Change to u/p formulation defaults The default number of pressure d egrees of freedom used in the u /p formulation is changed for the following elements: 2D plane strain and axisymmetric element: 5 to 8-node quadrilaterial eleme nt and the 6-node triangular element: Default number of pressure degrees of freedom is changed from 1 to 3. 3D solid element: 9 to 21-node hexahedral or prismatic element, and the 10-node t etrahedral element: Default number of pressure degr ees of freedom is changed from 1 to 4. This change is made to make the elements stiffer. The defaults in version 9.1 correspond to elements that are