0064. Rapid blast-resistance assessment for laminated plates protecting civil infrastructure and military equipment

This solution is designed for structural engineers, safety specialists, and engineering students working with laminated plates, panels, and protective hulls required to withstand blast waves and explosive impulses.

The module enables rapid verification of structural strength and stiffness at the early design stages, providing a solid foundation for initial engineering decisions. The tool supports efficient parametric analysis, clearly demonstrating how changes in laminate geometry, materials, and stacking sequences affect maximum deflection, layer stresses, and safety factors.

The output provides a comprehensive engineering report with key results and practical insights, allowing users to compare options and select the most efficient configuration for protective plates.

Automated Checks & Analysis

The module performs typical explosion resistance checks on laminated plates in a fully automated mode, minimizing the risk of arithmetic and methodological errors. The engineer receives a quick, transparent, and reproducible assessment of the protective element's performance and can focus on the correctness of the initial assumptions and design decisions rather than on manual calculations (time-consuming recalculations).

In the analysis, the explosive impact is represented as an impulse. The module determines the dynamic response of the plate to this load, calculates the maximum deflection, curvature, and stress in each layer, and then displays the safety factors and compliance with the design criteria.

Practical application of the module

Practical engineering cases in which this calculation module would be appropriate:

• Light tactical equipment reservation (Automotive Armor) — an additional mounted armor shield for doors or the bottom of a pickup truck/SUV, designed to withstand the blast wave from a nearby shell or mine explosion.
• Protective screens for critical infrastructure — relevant for protecting transformer substations or distribution nodes from debris and shock waves.
• Explosion-proof partitions (Industrial Safety) — chemical plants or ammunition depots often require lightweight partitions to protect personnel in adjacent rooms (the thickness of the multi-layer sandwich panel mounted in the frame is selected accordingly).
• Robotic platforms for demining — for lightweight robots, weight is a critical parameter in order to maintain mobility and range (a belly plate is created that can withstand the explosion of an anti-personnel mine).
• etc.

Features & Document Logic

The document is implemented as an interactive calculation with open logic, allowing the user to see all the "engineering math" without hidden blocks — from initial parameters to final conclusions.

• Input Data: plate geometry, layer stack structure (thickness, sequence and names of materials), physical and mechanical characteristics of the material of each layer (modulus of elasticity, Poisson's ratio, density, allowable stress), boundary conditions of fastening, parameters of the explosive impulse.
• Algorithm: Automated calculation of key variables using the short-pulse loading methodology — from pressure impulse to frequency parameters, deflections, stresses, and safety factors for each layer.
• Visualization: Formulas are fully transparent, and results are presented alongside a logical calculation chain to ensure rapid verification and confidence in the model.
• Flexibility: The document is easily adaptable to specific tasks — users can modify the stackup structure, change units of measurement, and customize calculation ratios to align with their own design standards.

Effective work with layers (materials) of the plate

The materials for each layer of the plate are set using drop-down lists (Selector object). The user simply selects the desired material and the program automatically assigns the corresponding physical and mechanical characteristics (modulus of elasticity, Poisson's ratio, density, allowable stress).

To add a new material to the list (or change an existing one), simply edit the resource table. This allows you to quickly and conveniently manipulate any user-defined material sets.

Technical Specifications & Standards

• Solution type: An interactive engineering сheck for the rapid blast resistance assessment of laminated protective plates — covering deflections, layer stresses, safety factors, and the impact of geometry and material layout.
• Calculation model: Rectangular plate (Kirchhoff-Love model) with simply supported edges along the contour; blast load defined as an equivalent short pressure impulse; dynamic response evaluated via a transparent analytical framework, focusing on maximum deflection and stresses in each layer.
• Purpose: Rapid and evidence-based initial selection and comparison of laminate design options, along with parametric analysis to determine thicknesses, materials, and the most efficient stacking sequence.

Standards (Codes): the module complies with common engineering practices for assessing random (emergency) impulse effects in accordance with Ukrainian regulatory documents, in particular

• DBN V.1.2-14:2018 "General principles for ensuring the reliability and structural safety of buildings and structures"
• DSTU EN 1990 (EN 1990:2023, IDT) "Eurocode — Basis of structural and geotechnical design"
• DSTU-N B EN 1991-1-7:2010 "Eurocode 1: Actions on structures — Part 1-7: General actions — Accidental actions

File Format: .tec (TechEditor Project).

Document Language: Ukrainian (Technical).

Output: On-screen review, report printing, export to PDF, RTF, DOCX, or image.

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