Abaqus的86个explicit单元手册查表
软件: ABAQUS
Hydrodynamic and Acoustic Elements: A Comprehensive Overview for Advanced Finite Element Analysis
The field of hydrodynamic and acoustic engineering utilizes a multitude of computational tools for modeling and simulation, primarily through the Finite Element Method (FEM). This extensive article aims to comprehensively summarize the various elements used for this purpose, conjugating technical definitions into precise and professional language.
1. Acoustic Elements in 2D (Canonité 22.1.3)
The threenode linear 2D acoustic triangle (AC2D3) forms the basis for solving acoustic issues in twodimensional space, leveraging linear isoparametric mapping for its geometrical representation.
AC2D3: Utilizes a 3node triangular configuration, providing a suitable vehicle for the approximation of acoustic phenomena within a plane. This element is integral for the simulation of sound propagation and absorption in biological tissues, architectural acoustics, and aeroacoustics applications.
2. 2D Acoustic Reduced Integration (Canonité 22.1.3)
AC2D4R: Enhanced computational efficiency for acoustic simulations by implementing reduced integration. This representation reduces the element's dimensionality, thus minimizing computational costs while ensuring accuracy through a unique formulation that carefully balances stiffness to prevent overstiffness scenarios.
3. 2D Acoustic Elements in Axisymmetric Conditions
ACAX3: The 3node linear axisymmetric acoustic triangle extends the capabilities to scenarios with rotational symmetry, allowing for the accurate modeling of acoustic sources in cylindrical or spherical geometries crucial for applications in machinery and aerospace engineering.
4. 3D Acoustic Elements:
AC3D4: A 4node linear tetrahedron, pivotal in the discretization of complex volumetric acoustic phenomena in three dimensions, essential for building acoustics, environmental noise studies, and musical instrument design.
AC3D6: The 6node linear triangular prism introduces a higher degree of accuracy and flexibility, particularly beneficial in scenarios involving intricate object shapes and sharp transitions, advancing the modeling in architectural and industrial design.
AC3D8R: This 8node linear brick element, featuring reduced integration, provides ideal conditions for handling complex volumes, offering additional robustness against hourglass modes to ensure reliable stress and strain discretization.
ACAX4R: Simplifies the 3D axisymmetric problem with a 4node bilinear axisymmetric quadrilateral, optimizing computational resources while capturing the essential acoustic behaviors in cylindrical systems akin to financial transactions or structural engineering cases.
5. Infinite Elements for Acoustics:
ACIN2D2: A 2node linear 2D infinite element for addressing the exterior radiation problems at low frequencies, reducing unnecessary computations.
ACINAX2: Tailored for axisymmetric infinite issues, providing a dedicated tool for sectors with rotational symmetry, optimizing solutions in acoustic boundary conditions and farfield noise predictions.
ACIN3D3, ACIN3D4, and ACINAX4: Expanding the range of infinite elements for 3D axisymmetric, 3D volumetric, and axisymmetric problems respectively, significantly enhancing the modeling of acoustic scattering and wave propagation in open spaces.
6. Beam Elements for Structural Modeling:
B21: This 2node linear beam is used for plane structures, demonstrating foundational capability in 2D simulations.
B22, B31, and B32: Contributions to the realm of 2D and 3D structural dynamics showcase versatility and improved accuracy due to higher polynomial interpolation, essential for intricate designs, aerospace structures, and vibroacoustic engineering.
7. TemperatureIntegrated Structural Elements:
Including AC3D4T, C3D4T, etc., these elements integrate thermal effects seamlessly with structural analysis, pivotal for conditions involving thermal expansion, heat exchangers, and thermal acoustics applications.
8. Constituent Elements:
Elements like COHAX4 (axisymmetric cohesive elements), CONN2D2, CONN3D2, etc., aid in creating frameworks that can model damage, contact, and complex interplay between different material phases, crucial for a comprehensive analysis in various engineering domains.
Conclusion
The elements detailed encompass a comprehensive toolbox for acoustic and hydrodynamic simulations, allowing engineers and physical system researchers to address complex issues with precision and efficiency. The integration of advanced integration techniques and the consideration of thermal effects expands the applicability of these tools across a plethora of engineering disciplines.
The field of hydrodynamic and acoustic engineering utilizes a multitude of computational tools for modeling and simulation, primarily through the Finite Element Method (FEM). This extensive article aims to comprehensively summarize the various elements used for this purpose, conjugating technical definitions into precise and professional language.
1. Acoustic Elements in 2D (Canonité 22.1.3)
The threenode linear 2D acoustic triangle (AC2D3) forms the basis for solving acoustic issues in twodimensional space, leveraging linear isoparametric mapping for its geometrical representation.
AC2D3: Utilizes a 3node triangular configuration, providing a suitable vehicle for the approximation of acoustic phenomena within a plane. This element is integral for the simulation of sound propagation and absorption in biological tissues, architectural acoustics, and aeroacoustics applications.
2. 2D Acoustic Reduced Integration (Canonité 22.1.3)
AC2D4R: Enhanced computational efficiency for acoustic simulations by implementing reduced integration. This representation reduces the element's dimensionality, thus minimizing computational costs while ensuring accuracy through a unique formulation that carefully balances stiffness to prevent overstiffness scenarios.
3. 2D Acoustic Elements in Axisymmetric Conditions
ACAX3: The 3node linear axisymmetric acoustic triangle extends the capabilities to scenarios with rotational symmetry, allowing for the accurate modeling of acoustic sources in cylindrical or spherical geometries crucial for applications in machinery and aerospace engineering.
4. 3D Acoustic Elements:
AC3D4: A 4node linear tetrahedron, pivotal in the discretization of complex volumetric acoustic phenomena in three dimensions, essential for building acoustics, environmental noise studies, and musical instrument design.
AC3D6: The 6node linear triangular prism introduces a higher degree of accuracy and flexibility, particularly beneficial in scenarios involving intricate object shapes and sharp transitions, advancing the modeling in architectural and industrial design.
AC3D8R: This 8node linear brick element, featuring reduced integration, provides ideal conditions for handling complex volumes, offering additional robustness against hourglass modes to ensure reliable stress and strain discretization.
ACAX4R: Simplifies the 3D axisymmetric problem with a 4node bilinear axisymmetric quadrilateral, optimizing computational resources while capturing the essential acoustic behaviors in cylindrical systems akin to financial transactions or structural engineering cases.
5. Infinite Elements for Acoustics:
ACIN2D2: A 2node linear 2D infinite element for addressing the exterior radiation problems at low frequencies, reducing unnecessary computations.
ACINAX2: Tailored for axisymmetric infinite issues, providing a dedicated tool for sectors with rotational symmetry, optimizing solutions in acoustic boundary conditions and farfield noise predictions.
ACIN3D3, ACIN3D4, and ACINAX4: Expanding the range of infinite elements for 3D axisymmetric, 3D volumetric, and axisymmetric problems respectively, significantly enhancing the modeling of acoustic scattering and wave propagation in open spaces.
6. Beam Elements for Structural Modeling:
B21: This 2node linear beam is used for plane structures, demonstrating foundational capability in 2D simulations.
B22, B31, and B32: Contributions to the realm of 2D and 3D structural dynamics showcase versatility and improved accuracy due to higher polynomial interpolation, essential for intricate designs, aerospace structures, and vibroacoustic engineering.
7. TemperatureIntegrated Structural Elements:
Including AC3D4T, C3D4T, etc., these elements integrate thermal effects seamlessly with structural analysis, pivotal for conditions involving thermal expansion, heat exchangers, and thermal acoustics applications.
8. Constituent Elements:
Elements like COHAX4 (axisymmetric cohesive elements), CONN2D2, CONN3D2, etc., aid in creating frameworks that can model damage, contact, and complex interplay between different material phases, crucial for a comprehensive analysis in various engineering domains.
Conclusion
The elements detailed encompass a comprehensive toolbox for acoustic and hydrodynamic simulations, allowing engineers and physical system researchers to address complex issues with precision and efficiency. The integration of advanced integration techniques and the consideration of thermal effects expands the applicability of these tools across a plethora of engineering disciplines.
相关推荐
