Composite cylinder design software

CCDS takes the guesswork out of this design process by providing a real-time stress-strain simulation for isotropic/anisotropic cylinders, which can undergo a wide variety of loading conditions.

• GUI interface for PC-based systems with real-time stress-strain analysis.
• 3-D elasticity solution, micromechanics and residual stress solution for hybrid composite cylinders
• Critical velocity solution for isotropic and non-isotropic material systems.
• Transient temperature solution for observing internal temperature distribution as a function of time.
• Temperature-dependent material properties.
• Observation of both global/principal stresses and strains/ displacements.
• Maximum stress and strain failure models included.
• Ability to add entire barrel dimensions using a customizable profile or single-point calculations for quick analysis.
• Autofrettage solution for steel barrel included.
• Access to large embedded material database, direct access to results in Excel worksheet format.
• Observation of stresses and strains, as a function of pressure and temperature along entire length of barrel, during ballistic firing.
• Addition of ARL interior ballistics simulation: IBHVG2: Interior Ballistics of High Velocity Guns v2. (ARL USE ONLY)
• Stand-alone GUI of IBHVG2 has also been developed and can be included in design package. (ARL USE ONLY)
• End result. User can now apply comprehensive design and analysis of composite barrels from fabrication to firing.

CCDS is a generic (cross-caliber) design tool, that include thermal/ mechanical modeling capabilities for multi-material gun tubes. The design tool also incorporates consideration of dynamic strain, interior ballistic pressures, autofrettage stresses, loads due to muzzle brakes, and thermal flux due to rate of fire considerations for gun firings. The latest version, also includes ARL’s interior ballistics simulation IBHVG2, to model internal pressures and temperatures during firing. This added functionality integrates propellant and projectile inputs with resulting barrel stresses, strains and temperatures thus allowing the user to optimize tube dimensions based on the overall design criterion. CCDS also incorporates a number of common failure theories for anisotropic materials, and a barrel profiler, which can be used to design entire composite overwrapped gun tubes based on variation in internal pressures and temperatures along the length of the tube. CCDS  has been distributed to ARL, Benet Laboratories, SPARTA Inc, Materials Sciences Corporation, and Magnum Technology Inc.

CCDS was used as the primary design tool for a composite overwrapped gun tube for the US Army's FCS program. The gun was designed to absorb internal pressures of up to 90,000 psi with a factor of safety of only 1.1. The tube was also optimally designed to provide interface compression at temperatures as cold as -50 F yet still operate at temperatures up to 400 F. The gun was successfully fired in the summer of 2003 with live firing strain results that matched CCDS (largest difference in strain was measured to be less that 2% of firing data).