E-CodeBeam deflection by superposition — a TI-84 Plus CE program
BEAMSUP is a TI-BASIC program for the TI-84 Plus CE. Simply supported or cantilever beam with any number of point loads plus a uniform load: deflection at the point you choose, the maximum deflection and where it is, and the support reactions — by superposing the standard cases.
What it asks for and what it shows
It asks for 7 values at its prompts, after you pick option 1 from its menu. In the example below it shows DEFL MM, MAX MM, AT X M, RA KN, RB KN.
Example run
One of its oracle test cases: “simply supported UDL only (5wL⁴/384EI)”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Menu | option 1 |
| Input 1 | 6 |
| Input 2 | 200 |
| Input 3 | 8356 |
| Input 4 | 12 |
| Input 5 | {0} |
| Input 6 | {0} |
| Input 7 | 3 |
| The screen shows | |
DEFL MM= | 12.11704165 |
MAX MM= | 12.11704165 |
AT X M= | 3.000000034 |
RA KN= | 36 |
RB KN= | 36 |
How it's checked
5 test cases, each checked against an independent method. Replayed key by key on a virtual TI-84 Plus CE, they make 31 checks.
How E-Code checks every program
Run it or put it on your calculator
- Open the library in the TI-84 Plus CE calculator and pick “Beam deflection by superposition” (BEAMSUP).
- Put it on your own calculator with a computer and a USB cable, or type it in by hand.
Related programs
- Column buckling: Euler and Johnson
- Beam reactions and maximum moment
- RC circuit charging transient
- Cantilever beam deflection
- Reynolds number / flow regime
All TI-84 Plus CE engineering programs · All TI-84 Plus CE programs