Basic Calculations

Protocol

Hint: WIP.

1. Use Calculations Template - you can make a copy of it or include just the relevant quantities.
2. Document your work at a wiki page named MachineName_Calculations
3. Use Presentation Template to explain your calculations with pictures and diagrams. Embed this on the MachineName_Calculations wiki pag. For simple calculations, take pictures of backs of envelopes, your note sheets, screencasts, etc - that show basic quantifications. Use whatever is relevant to quantify what you are working on.

About

Calulations are importance for reasons of determining performance. They are also used in product literature to show useful product specifications.

Scaling Calculations are calculations that also consider scalability. These calculations include all relevant physical, mechanical, fluid, electrical, chemical, thermal, static, dynamic, aerodynamic, acoustic, optical, hydrological, nuclear, structural, and other properties that allow a machine to be effective for a particular purpose. Scalability is emphasized because a single design should be adaptable to different scales of operation via Intensive and Extensive Scalability. Calculations include both parameters and calculations based on these parameters.

Embodied Energy

• Cement Energy Calculations

Natural Resource Availability

• Solar income on earth - Solar Income
• Raodside hay - Straw Bale Calculations

Biological

• Worm Tower Calculations

Electrical

• Nichrome Wire Calculator
• Voltage Drop Calculator
• EMF Calculations - in FreeCAD?

Electromagnetic

• Open Source Motor Simulation - generic DC motor
• Axial Flux Permanent Magnet generator - OpenAFPM

Thermal

• OSE Design Manual - Thermal Calculations
• Heat loss from a pipe. Select inner temperature, outer temp, dimensions, and wall conductivity - [1]
• PEX length for a given spacing and room size- [2]

Conversion

• Fractional inch to mm - [3]

Water

• Inches of rain per area to gallons - [4]

Construction

• Foundation Calculations
• Caulk Calculator
• Deck Calculator
• CEB_Calculations

Speed, Torque, Power

• Cycling Power and Speed Calculator
• Torque Conversion Calculator
• Pile Driver Calculations
• Hammermill rotor load - Soil_Mixer_2019#Calculating_Load_of_on_Motor

1. Motor Speed Calculator
2. Hydraulics Calculators
3. Chain Length Calculator

Physical Quantities

1. Motor Torque based on power
2. Nichrome Wire Calculator
3. Pulley Calculator
4. Solenoid Force Calculator
5. Solar Angle Calculator
6. Magnet Force Calculator
7. Cycling Power and Speed Calculator

Economics

1. Cost of Living

Geometry

1. Triangle Calculator

Structural

1. FreeCAD FEM Workbench
2. Shaft Deflection Calculator
3. Beam Deflection Calculator
4. Fibers - Fiber-Plastic Composite Calculations

Size, Weight and Volume

1. Area Calculator
2. Volume Calculator
3. Steel Plate Weight Calculator
4. Bolt Weight Calculator
5. Nut Weight Calculator
6. Metals Weight Calculator - by material
7. Steel Weight Calculator - steel by shape
8. Basic force, torque, stress limit calculations
9. Center of Mass + Weight
10. Range of Motion Design calculations
11. CAE analysis for structural failure, fatigue, deformation, crash testing, abrasion, thermal properties, and others
12. Cost
13. Beam deflection
14. Expected lifetime
15. Basics Statics calculations according to Basic Statics Calculations Procedure
16. Expected maintenance cost according to Maintenance Cost Template
17. Performance/power/speed/lifetime/lift/etc.
18. Precision calculations - what precision of motion is achieved in devices
19. Tolerancing requirements
20. Hydraulic fluid flow and pressure
21. Basic static loads analysis of mechanical devices
22. Rotation speeds
23. Bending forces
24. Shear strength limits
25. Thermal loss calculations
26. Thermal profiles - FEA
27. Geometrical optics
28. Torque calculations
29. Rotational inertia
30. EMF calculations
31. Thermal mass calculations
32. Combustion calculations

Construction

• Span Calculator
• CEB Calculations

These calculations should be performed for all critical components of machines, even though the aim is not Value Engineering. In the case over-building of components for purposes of lifetime design, calculations are relevant for providing accurate assessment of safety factors and performance expectations independent of empirical performance data.

A list of desired calculations or data points should be produced for each machine. Note: a spreadsheet or education page should be included to give a crash course on each calculation for the benefit of a novice who has a working knowledge of secondary-level

OSE Machines

• Lyman Filament Maker Calculations
• Brick Pressing Rate Calculations
• Nichrome heater - D3D Universal v20.07 Calculations
• Biodigester gas production - Biodigester#Technical_Design_.2B_Calculations

Spreadsheet

The typical calculations for consideration are:

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