The Verification Manuals for the following products were updated for 2026 R1:
VM324: Swelling Strain of a Block Under High Fluence Loading: A fluence is applied on a block constrained in the vertical direction. This induces a swelling strain. The value of the swelling strain is compared to Mechanical APDL results.
Updates for 2026 R1:
LS-DYNA Workbench Test Cases
No test cases were added for 2026 R1.
LS-DYNA Solver Test Cases
VM-LSDYNA-SOLVE-038: Rectangular Plate with Circular Hole Subjected to Tensile Loading: The simulation models a 3D rectangular plate with a central circular hole, a geometric irregularity, subjected to linear static structural analysis to evaluate stress concentration effects.
VM-LSDYNA-SOLVE-039: Buckling of a Uniform Rod: This test case models the elastic buckling behavior of a uniform cantilever rod under axial compressive loading.
VM-LSDYNA-SOLVE-040: Buckling of a Stepped Rod: This finite element (FE) simulation investigates the elastic buckling behavior of a stepped cantilever rod subjected to two axial loads: a tensile force and a compressive force.
VM-LSDYNA-SOLVE-041: Buckling of a Curved Panel: This finite element (FE) simulation investigates the elastic buckling behavior of a curved panel under a uniform radial pressure.
VM-LSDYNA-SOLVE-042: Modal Analysis of an Annular Plate: This test case models the free vibration of an annular plate, subjected to a free-clamped condition. The objective is to validate the first six natural frequencies of the structure.
VM-LSDYNA-SOLVE-043: Fundamental Frequency of an Elliptical Plate: This test case simulates the vibration of a clamped-edge elliptical plate to validate its fundamental natural frequency.
VM-LSDYNA-SOLVE-044: Modal Analysis of a Rectangular Plate: This simulation models the vibration of a rectangular plate with the two smaller edges subjected to a simply supported condition and one of the other edges subjected to a clamped condition. The objective is to validate the first six natural frequencies of the structure.
VM-LSDYNA-SOLVE-045: Fundamental Frequency of a Square Plate with Opening: This simulation investigates the vibration of a clamped squared plate with a central opening.
VM-LSDYNA-SOLVE-046: Fundamental Frequency of a Slender Beam with Central Mass: This test case models the vibration of a pinned-pinned slender bar with a concentrated mass at its mid-length. The objective is to validate the fundamental natural frequency of the structure.
VM-LSDYNA-SOLVE-047: Axial Natural Frequency of Hat Beams: This test case simulates the vibration of a spring-mass system composed of two collinear hat bars. The objective is to validate the axial natural frequency of the structure.
VM-LSDYNA-SOLVE-048: Transverse Natural Frequencies of a Cantilever Tube: This test case models the vibration of a cantilever tube.
VM-LSDYNA-SOLVE-049: Natural Frequency of a Spring-Mass System: This test case models models a spring-mass system comprised of an instrument set on a rubber mount. The objective is to validate the system's natural frequency.
VM-LSDYNA-SOLVE-050: Lateral Vibration of a Rectangular Plate: This test case models the lateral vibration of a rectangular plate with one smaller edge subjected to a clamped condition. The objective is to validate the structure's first natural frequency of lateral vibration.
VM-LSDYNA-SOLVE-051: Natural Frequencies of a Circular Plate: This test case models the vibration of a circular plate with its edge subjected to a clamped condition.
VM-LSDYNA-SOLVE-052: Natural Frequencies of a Two-Mass-Spring System: This test case models a system composed of two masses and three springs. The objective is to validate the two normal modes and natural frequencies of the system.
VM-LSDYNA-SOLVE-053: Seismic Response of a Mass-Spring System: This test case models a vibrometer, consisting of a mass-spring system with base excitation.
VM-LSDYNA-SOLVE-054: Seismic Response of a Mass-Spring-Damper System - Equivalent Structural Damping: This test case models a mass-spring-damper system with a harmonic disturbing force acting on the mass.
VM-LSDYNA-SOLVE-055: Transient Response of a Mass-Spring-Damper System: This test case models a mass-spring-damper system, which is displaced by a distance Δ when released. Four damping ratios are tested. The objective is to validate the displacement profile of each system.
VM-LSDYNA-SOLVE-056: Transient Response of a Two-Mass-Spring System: This test case models a system composed of two masses and two springs. Mass 1 is subjected to a pulse load F. The objective is to validate the displacement profile of each mass.
VM-LSDYNA-SOLVE-057: Pin-Ended Double Cross: In-Plane Vibration: This test case models eight beams of the same length, evenly spaced, and connected at the center. All endpoints are constrained in the x and y directions. The objective is to validate the frequency of predicted modes.
VM-LSDYNA-SOLVE-058: Buckling of a Bar with Hinged Ends (Beam Elements): This test case models the elastic buckling of a long, uniform bar with hinged ends subjected to axial loading. The objective is to validate the critical buckling load of the bar.
VM-LSDYNA-SOLVE-059: Portal Frame Under Symmetric Loading: This test case models a rectangular frame subjected to a uniform distributed load.
VM-LSDYNA-SOLVE-060: Seismic Response of a Simply Supported Beam: This test case models a simply-supported beam with both supports subjected to vertical motion. The objective is to validate the natural frequency, the maximum deflection, and the maximum bending stress of the beam.
VM-LSDYNA-SOLVE-061: Transient Response of a Ball Impacting a Flexible Surface: This test case models a rigid ball dropped onto a flexible surface. The objective is to validate the time, displacement, velocity, and kinetic energy of the ball at the moment of the impact and the maximum displacement.
VM-LSDYNA-SOLVE-062: Cantilever with Off-Center Point Masses: A cantilever beam is situated horizontally with two off-center lump masses. The beam is constrained in all DOFs at the left end. Frequency vibration analysis is performed on the model.
VM-LSDYNA-SOLVE-063: Cylindrical Vessel Under Internal Pressure: This test case models a long cylindrical vessel with closed ends, subjected to an internal pressure. The 3D cylinder is modeled as a 2D axisymmetric rectangle representing the cylindrical shell, and the objective is to validate the circumferential stress of the vessel.
VM-LSDYNA-SOLVE-064: Deep Simply-Supported Beam: This test case performs frequency vibration analysis on a simply-supported beam that is constrained in the x, y, z and Rx direction on the left endpoint and in the y and z direction on the right endpoint.
LS-DYNA Fluids Test Cases
VM-LSDYNA-FLUID-008: 2D Passive Scalar Transport in a Laminar Channel Flow: This test case models the transport of a passive scalar (species) in a two-dimensional, incompressible, steady, laminar flow inside a channel.
VM-LSDYNA-FLUID-009: Womersley Flow: Pulsative Flow in a Rigid Cylindrical Tube: This test case models the Womersley flow which consists of an oscillatory, fully developed laminar flow of a Newtonian fluid in a rigid cylindrical tube driven by a time-periodic pressure gradient.
VM-LSDYNA-FLUID-010: Conical Body Impact on a Water Free-Surface: This test case models the impact of a conical body on a water free-surface. The objective is to validate the vertical hydrodynamic force profile over time.
VM-LSDYNA-SPH-001: 2D Laminar Couette Flow Simulation (SPH): The simulation uses SPH to model classical Couette flow, representing a viscous, incompressible fluid confined between two parallel plates.
LS-DYNA EMAG Test Cases
No test cases were added for 2026 R1.
LS-DYNA Benchmark Test Cases
No test cases were added for 2026 R1.
LS-DYNA Impact Test Cases
VM-LSDYNA-IMPACT-001: Normal Collision of a Rubber Sphere with a Steel Plate: This test case models the normal collision of a deformable rubber sphere with a rigid steel plate.
VM-LSDYNA-IMPACT-002: Tensile Elastic Wave Analysis in a 3D Split-Hopkinson Pressure Bar: This test case models the three-dimensional impact of a hollow cylinder (striker) on a flange connected to a long bar (incident bar).
VM-LSDYNA-IMPACT-003: Tensile Elastic Wave Analysis in a 2D Split-Hopinson Pressure Bar: This test case models the two-dimensional impact of a hollow cylinder (striker) on a flange connected to a long bar (incident bar).
VM-LSDYNA-IMPACT-004: Compressive Elastic Wave Analysis in a 3D Split-Hopkinson Pressure Bar: This test case models the three-dimensional impact between two long cylinders (a moving striker and stationary incident bar).
VM-LSDYNA-IMPACT-005: Compressive Elastic Wave Analysis in a 2D Split-Hopkinson Pressure Bar: This test case models the two-dimensional impact between two long cylinders (a moving striker and stationary incident bar).
LS-DYNA Dynamics Test Cases
VM-LSDYNA-DYNAMICS-001: Uniform Precession of Gyroscope (Rigid Parts): This test case calculates the precession angular speed of a gyroscope to validate the LS-DYNA dynamics calculations for spinning bodies, specifically rotational motion. All components are modeled as rigid bodies.
VM-LSDYNA-DYNAMICS-002: Uniform Precession of Gyroscope (Elastic Solid Disk): This test case calculates the precession angular speed of a gyroscope (gyro) to validate the LS-DYNA dynamics calculations for spinning bodies, particularly rotational motion. All components, except for the elastic disk (flywheel), are modeled as rigid bodies.
VM-LSDYNA-DYNAMICS-003: Uniform Precession of Gyroscope (Elastic Shell Disk): This test case calculates the precession angular speed of a gyroscope (gyro) to validate the LS-DYNA dynamics calculations for spinning bodies, particularly rotational motion. All components, except for the elastic disk (flywheel), are modeled as rigid bodies.