Military logistics tolerates no delays. A destroyed bridge that cannot be quickly overcome can cost not only precious time but also lives. An engineering unit on the front line often faces a seemingly impossible task: to build a temporary structure here and now using available materials — mostly wooden beams — that is guaranteed to withstand heavy military vehicles.
How should one act in such a situation? Rely on intuition or old manuals, hoping the timber will hold? The cost of such a mistake is lost equipment, and possibly, a failed operation.
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The Engineering Challenge: Speed vs. Strength
On the front line, an engineer is forced to perform a sort of "engineering split". On one hand, maximum speed is required. On the other, absolute reliability is essential, as the safety of their comrades depends on their calculations. Without access to complex software, regulatory documents, material databases, or other resources, finding this balance is incredibly difficult.
What hinders engineering analysis? The quality of local timber is unknown, the exact specifications of military vehicles can vary, and there is simply no time for in-depth analysis. This set of challenges became the impetus for our action.
How to Analyze the Strength of a Bridge Made from Available Materials?
When combat units do not have access to common structures, they use handy materials — steel beams from destroyed sites, reinforced concrete elements, wooden logs. And here, a key engineering paradox arises.
Despite the fact that these structures will later be replaced or abandoned (playing a purely temporary role), they are subject to almost the same strength requirements as permanent structures. After all, they must withstand nearly the same loads, particularly heavy military vehicles.
Understanding the urgency of this problem, in 2022, in cooperation with specialists from the Department of Military Training of the State Transport Special Service of Ukraine (Ukrainian State University of Science and Technologies), we at Dystlab decided to create a simple tool that would become a reliable assistant for military engineers.
Thus, the application for designing temporary wooden bridges was born. Its logic is simple: an engineer inputs basic data — the span length, the diameter, and the number of beams — selects the vehicle type, and instantly receives a clear answer on the screen: "SUCCESS" or "WARNING! STRENGTH INSUFFICIENT":
"Under the Hood" of the App: Engineering for Real-Life Conditions
To ensure such a simple interface provides a reliable result, we incorporated complex engineering solutions and assumptions designed specifically for conditions of maximum uncertainty.
- Calculation Methodology: The application implements an algorithm to check the main bridge beams according to the first group of limit states (ULS), with a key focus on bending moment resistance — the most critical parameter for such structures.
- Increased Safety Factors: We conservative increased the strength and stiffness safety factors compared to traditional calculations. Why? To compensate for all unknowns: the wide range of military vehicle weights, the non-uniformity and potential defects of the timber, the dynamic impact during movement, and so on.
- Realistic Material Properties: Wood properties are defined as realistically as possible. The modulus of elasticity is variable and depends on the duration of the load, and the design strengths for bending and shear are adopted for beams with natural taper and a moisture content of over 25 % — that is, for the worst-case scenario.
- Real Vehicle Models: The database includes parameters for specific military vehicles: tanks T-64BV, T-64BM "Bulat," T-84 "Oplot," and the M270 MLRS. This list can be expanded directly in TechEditor.
Essentially, we automated a complex engineering analysis, "packaging" it into a simple and intuitive interface.
Why TechEditor? Robustness and Autonomy for Engineering Tasks
You might ask: why not create a simple online calculator or a mobile app? The answer lies in reliability and control.
Any online service depends on many factors: the stability of your internet connection, the operation of remote servers, potential outages. We recommend using TechEditor for a number of objective reasons:
- First, it is full-fledged software that runs autonomously on your computer. The internet is not required to perform calculations. It is needed only for a moment for authorization, for which even the weakest connection is sufficient.
- Second, it is a product developed in Ukraine. For projects related to defense or trade secrets, this is a guarantee that all your data remains with you.
And third, it is an environment that protects you from errors. Unlike spreadsheets, TechEditor automatically controls units of measurement, providing an additional level of reliability that is critical in any engineering task.
More Than One Bridge: The Flexibility of the Solution
Although the application was created for bridges, its algorithm can also be used for other military tasks — for example, for the quick verification of the load-bearing capacity of support beams in trenches, bunkers, and other fortifications.
Tools for Victory: What's Next?
This application is just one example of how modern digital tools can solve critical tasks. Currently, it is known to a rather narrow circle of specialists, but there are hundreds of such "unaddressed" engineering challenges on the front lines and in the rear.
We at Dystlab are always open to new challenges. If your military unit or design company working to protect and defend in the rear faces similar problems and requires rapid automation and a reliable result, please contact us.
Let's create the tools that bring Ukraine's victory closer, together!
Vitalii Artomov
"I am working to make «Made in Ukraine» a global symbol of quality and style"
CEO, co-founder of Dystlab, developer of TechEditor. Engineer, scientist, Ph.D. with over 20 years of experience in structural analysis and automation of engineering calculations. I advise engineering companies in Ukraine, Europe, and North America.
Discuss business solutions: This email address is being protected from spambots. You need JavaScript enabled to view it. | +380504576819 (WhatsApp)
