University of Waterloo Concrete Canoe Analysis Suite

These scripts are designed to take in the properties of the mix (as variables in _canoeValues.py) and hull design (as 3d points in csv files in data/HullDesignExports) and paddler positions and weights entered in each of the Longitudinal Analysis scripts, and calculate the canoe's expected structural integrity and performance characteristics.

Script Run Order

1. Approximation-Vol Diff.ipynb
2. Longitudinal Analysis_[2-6] Paddler.ipynb
3. All Other Scripts

Script Overview

_canoeValues

Relies On: None

Contains all constants used in the code, for variables, concrete properties, etc. Imported into basically every file.

Ensure this is updated before running any scripts!

Approximation-Vol Diff

CSV File	Script Output
Inner Hull	N/A
Outer Hull	N/A

The first part of this script is solving for the volume and mass of the canoe station by station. This is accomplished by subtracting the volume bound by the inner hull from the volume bound by the outer hull. Currently, this script also performs the longitudinal and shear analysis for the display case.

Flexural Stress

CSV File	Script Output
Inner Hull	N/A
Outer Hull	N/A
Station Information	Approximation-Vol Diff
Length_vs_Moment_Display_Stand	Approximation-Vol Diff
Length_vs_Moment_2 Paddler	Longitudinal Analysis_2 Paddler
Length_vs_Moment_4 Paddler	Longitudinal Analysis_4 Paddler
Length_vs_Moment_6 Paddler	Longitudinal Analysis_6 Paddler & Longitudinal Analysis_Transportation
Shear_and_Moment_Display_Stand	Approximation-Vol Diff
Shear_and_Moment_2 Paddler	Longitudinal Analysis_2 Paddler
Shear_and_Moment_4 Paddler	Longitudinal Analysis_4 Paddler
Shear_and_Moment_6 Paddler	Longitudinal Analysis_6 Paddler & Longitudinal Analysis_Transportation

For all load cases, solves for the stress experienced along the top and bottom of the canoe due to bending moment. The max tensile and compressive stresses can be compared with the concrete strength to determine if the canoe fails due to longitudinal bending. Plots the bending moment experienced in each case against the allowable bending moment to produce the resistance envelope plot.

Longitudinal Analysis_[2,3,4] Paddler

Calculates maximum shear force and bending moments that the canoe experiences in the case of the races. Creates shear force and bending moment diagrams. Also calculates the waterline, water weight, and canoe total weight.

Longitudinal Analysis_[6] Paddler

Calculates maximum shear force and bending moments that the canoe experiences during the swamp test. Creates shear force and bending moment diagrams. Also calculates the waterline, water weight, and canoe total weight.

Longitudinal Analysis_Transportation

THIS SHOULD NOT BE RUN TO AVOID OVERWRITING CSVs Zach thinks he commented the sections that would overwrite but just to be safe

In theory this would obtain a maximum allowable acceleration based on the bending moment resistance obtained in FlexuralStress. In reality, that functionality is mostly hard-coded and it is almost entirely a copy of Longitudinal Analysis_6 Paddler.

Longitudinal Shear Analysis

Relies On:

CSV File	Script Output
Inner Hull	N/A
Outer Hull	N/A
Station Information	Approximation-Vol Diff
Length_vs_Shear_Display_Stand	Approximation-Vol Diff
Length_vs_Shear_2 Paddler	Longitudinal Analysis_2 Paddler
Length_vs_Shear_4 Paddler	Longitudinal Analysis_4 Paddler
Length_vs_Shear_6 Paddler	Longitudinal Analysis_6 Paddler & Longitudinal Analysis_Transportation
Shear_and_Moment_Display_Stand	Approximation-Vol Diff
Shear_and_Moment_2 Paddler	Longitudinal Analysis_2 Paddler
Shear_and_Moment_4 Paddler	Longitudinal Analysis_4 Paddler
Shear_and_Moment_6 Paddler	Longitudinal Analysis_6 Paddler & Longitudinal Analysis_Transportation

Calculates the longitudinal shear stress at each station along the canoe along with an envelope of the max and min allowabale shear stress, for each of the critical cases. It also plots the shear force of each of the critical cases on one graph along with the shear force envelope.

Punching Shear Analysis

Calculates the punching shear stress at the canoe’s critical location, punching shear stress canoe resisted and compares the minimum punching shear resisted to the stress at critical location. Also calculates the minimum compressive strength required to resist punching shear.

roadSurfaceModel

(Zach)

Torsional Analysis

Relies On:

CSV File	Script Output
Outer Hull	N/A
Station Information	Approximation-Vol Diff
Shear_and_Moment_6 Paddler	Length_vs_Shear_6 Paddler & Longitudinal Analysis_Transportation

Calculate torsional stress at each station along the length of the canoe.

Torsional_Loading

Relies On:

CSV File	Script Output
Outer Hull	N/A
Station Information	Approximation-Vol Diff
Station_Loads_2 Paddlers	Length_vs_Shear_2 Paddler
Station_Loads_4 Paddlers	Length_vs_Shear_4 Paddler
Station_Loads_6 Paddlers	Length_vs_Shear_6 Paddler

Print the torsional loading at each station. Has a WIP section to calculate torsion along the canoe with forces focused on different sides for different paddlers.

Transverse Analysis_6 Paddlers

Relies On:

CSV File	Script Output
Outer Hull	N/A
Station Information	Approximation-Vol Diff
Station_Loads_6 Paddlers	Length_vs_Shear_6 Paddler & Longitudinal Analysis_Transportation

Enter the paddler number case, calculates the max transverse load and at which station it occurs.

Outputs: Station_Loads_6 Paddlers.csv

Transverse Shear from centre

WIP

Transverse_Bending

Relies On:

CSV File	Script Output
Outer Hull	N/A
Station Information	Approximation-Vol Diff

Calculates the moments along the length of the canoe (?)