New customers can spin up VMs, build with AI, and query data at no cost.
Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
Start Free
Ship Agents Faster
Transform your applications and workflows into powerful agentic systems at global scale.
Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
A Fortran code for design and analysis of ring-stiffened shells
DAPS4e.6 is an updated version of a Fortran code by John Renzi and William Gordon for design and analysis of monocoque and ring-stiffened circular cylindrical shells [DOI: 10.13140/RG.2.2.18176.92165]. The following failure modes are considered:
• Shell stresses and displacements at mid-bay and ring-frames.
• Axisymmetric collapse (AC).
• Elastic and Inelastic Interbay Buckling. (EIB and IIB).
• Elastic and Inelastic Monocoque Instability (EMI and IMI).
• Ring-frame stress and Elastic Instability analysis (EFI).
Solutions compare favorably with DTMB experimental results.
DAPS4e.6’s IO is managed through a Visual Basic UserForm. Pre/post processing is done using macro-enabled Excel workbooks.
...