VigaFrame

Cândido Lucena

Contains ads

About this app

VigaFrame is a professional 2D structural analysis calculator for engineers, designers, and engineering students. Inspired by FTool, it brings to mobile phones the calculation of beams, frames, and planar trusses using the Direct Stiffness Method with verifications according to Brazilian standards.

📐 SUPPORTED MODELS
• Isostatic and hyperstatic beams
• Plane frames with any geometry
• Trusses (bi-hinged bars) with dedicated tool
• Pratt, Howe and Warren fast truss generators
• Supports on inclined planes (ramp, inclined beam)

⚙️ COMPLETE SUPPORTS
• Fixed support, hinge (pin), movable support (roller)
• Supports rotated at any angle (-180° to +180°)
• Prescribed settlements
• Elastic springs (translation and rotation)
• Correct engineering symbols: hatching on the fixed support, circles on the roller, triangle on the hinge

🔬 VARIABLE LOADS
• Nodal forces (Fx, Fy, concentrated moment)
• Trapezoidal distributed loads (uniform or linearly varying)
• Point loads in any position of the element
• Configurable direction: global X/Y or local axial/transverse
• Uniform temperature effect and thermal gradient
• Optional automatic self-weight (γ·A)

📊 DETAILED RESULTS
• Normal force diagrams (N) with Tension/Compression coloring
• Shear (V) and Bending Moment (M) diagrams
• Elastic (deformed) line with maximum deflection
• Support reactions in all directions (including moments)
• Nodal displacements (u, v, θ)
• Detailed tables per element and per node

📋 NBR CATALOGS
• Steels: MR-250 (NBR 7007), ASTM A572 Gr.50, A992, CA-50
• Concretes: C20, C25, C30, C35, C40, C45, C50 (NBR 6118)
• Timber: C20, C30, C40 (NBR 7190)
• Tabulated profiles: W (complete Gerdau line), U (NBR 5884),

L (angle bars), circular tubes
• Pre-configured rectangular concrete sections
• Customized materials and sections

✅ STANDARD VERIFICATIONS
NBR 8800 (Steel):

• Axial tension (§5.2)

• Axial compression with global buckling, c-curve (§5.3)

• Plastic bending for compact sections (§5.4)

• Shear (§5.4.3)

• Normal + Moment combination (§5.5)

• SLS deflection (Annex C)

NBR 6118 (Concrete):

• Design of longitudinal reinforcement for bending (§17.2)

• Minimum reinforcement (Table 17.3)

• Shear without stirrups: V_Rd,c (§17.4)

• SLS deflection (§13.3)

Editable coefficients γf, γa1, γc, γs. Green/yellow/red visual status per element, with utilization factor η.

📄 PDF REPORT
Generation of a complete technical report with cover page, model tables (nodes, elements, materials, sections, loads), results (reactions, displacements, extreme forces) and standard verifications with colored status.

Shareable via WhatsApp, email or print.

💾 PRODUCTIVITY
• Continuous auto-save while you work
• Multiple projects saved with names
• Light and dark themes
• Intuitive pan and zoom on the canvas
• Configurable snap (5/10/25/50/100 cm or free)
• Unlimited undo/redo
• Ready-to-start examples: simply supported beam, plane frame, three

truss types

🇧🇷 MADE FOR THE BRAZILIAN MARKET
Brazilian sign convention (negative gravity, positive moment in the
tensioned fiber). Catalogs of materials and profiles available on the national market. Updated technical standards: ABNT NBR 6118:2014 (concrete),
ABNT NBR 8800:2008 (steel), ABNT NBR 7190:1997 (wood).

🎯 IDEAL FOR
• Civil engineers in the office, on construction sites, or during technical visits
• Civil and General Mechanical Engineering students
• Quick dimensional verification of structural elements
• Preliminary dimensioning and checks
• Didactic support in the classroom

VigaFrame puts a complete structural calculator in your pocket!

What’s new

Versão inicial do VigaFrame: análise estrutural 2D no celular.

• Cálculo de vigas, pórticos e treliças (Pratt, Howe, Warren) pelo Método da Rigidez Direta
• Diagramas N/V/M e deformada com escala ajustável
• Apoios completos: engaste, rótula, móvel — incluindo apoios inclinados
• Cargas distribuídas, pontuais, momentos e efeito de temperatura
• Verificações NBR 8800 (aço) e NBR 6118 (concreto) com ELU e ELS
• Relatório PDF compartilhável
• Catálogo de perfis e materiais brasileiros