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Learning Games (1995)(Maple Media).iso
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1992-09-15
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E_BFW.exe
Engineering-Beam Formulas for MS Windows
User Reference
System Requirements:
Hardware:
* An IBM or compatible computer.
* A monitor/graphics card supported by Windows.
* A mouse supported by Windows.
* A printer supported by Windows.
Software:
* MS DOS or PC DOS 3.1 or later.
* MS Windows 3.0 or later.
Copyright (C) 1992 A. Hallahan.
Engineering formulas used in this program are taken from:
Formulas for Stress and Strain 4th Edition R.J. Roark,
Mechanical Engineering Design 3rd Edition J.E. Shigley, and
Design of Weldments O.W. Blodgett.
The results this program have been thoroughly tested and to
the best knowledge of the author are completely accurate.
However, the author assumes no responsibility for errors,
misuse, or damage caused by the use of this program.
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IBM and PC DOS are registered trademarks of International
Business Machines Inc.
MS DOS and Windows are registered trademarks of
Microsoft, Inc.
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Installation:
No special installation is required for this program.
E_bfw consists of a single .exe file which can be copied
to any convenient hard disk directory.
From within Windows, e_bfw can be started like any other
Windows application, i.e., by entering its filename in the
Run window of Progam Manager, or by double clicking its
filename in File Manager.
From DOS, e_bfw can be started from the DOS command line
as "win drive:\path\e_bfw".
If desired, the e_bfw icon can be added to the "Windows
Applications" window. Refer to the Windows Setup program
instructions to do this.
Description:
E_bfw is a Mechanical Engineering application written
to run under MS Windows Version 3.0 or later.
This program was designed to be a small, fast, and easy
to use beam formula solver. In its present form the
program will solve 12 of the most common loading/support
cases. Program outputs include end reactions, shears,
moments, and deflections.
The program consists of 2 main windows. The e_bfw opening
window provides control of the System and local menus, and
allows selection of a particular beam case. Once a selection
is made, a pop-up dialog box gathers inputs and calculates
outputs. Details of each window's operation are given on
the following pages.
Although the program is fully functional through the keyboard,
the use of a mouse increases its efficiency.
Planned updates for this program include:
1) expanding the number of loading/support cases.
2) expanding the number of outputs.
3) dynamic re-plotting of the beam curves.
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E_BFW Main Window
Instructions:
Mouse:
Single click beam icon for selection.
Double click selected icon to open its dialog box.
Keyboard:
Use the cursor arrow keys (UP-DOWN-LEFT-RIGHT) to select icon.
<ENTER> to open its dialog box.
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E_BFW Dialog Box
Edit Controls:
Edit controls are provided for inputting parameters:
P[lb], w[lb/in], L[in], a[in], b[in], x[in], E[psi], I[in^4], S[in^3]
Edit controls filled with 0's are inactive in context with the
selected beam.
Active edit controls are initially filled with default values:
P: 100.0 [lb]
w: 100.0 [lb/in]
L 100.0 [in]
a: 10.0 [in]
b: 10.0 [in]
x: 0.0 [in]
E: 30e6.0 [psi]
I: 10.0 [in^4]
S: 5.0 [in^3]
The maximum value for any edit control input is 40e6. Inputs
consisting of non-numeric or alphabetic strings will be read
up to the first non-numeric character.
Edit control spin buttons (mouse only) will increment @ the
following steps when single clicked:
P,w: 1.0 [lb,lb/in] (for inputs < 10000.0 lb,lb/in )
L,a,b,x: 0.0625 [in] (for inputs < 1000.0 in)
I: 0.1 [in^4] (for inputs < 1000.0 in^4)
S: 0.1 [in^3] (for inputs < 1000.0 in^3)
Input value errors will cause the program functions
to return zero (0) outputs for all results. For example,
an [x] value of 120.0" for an [L] value-beam length
of 100.0" will 0 all outputs.
Note that edit controls for beam Modulus of Elasticity (E),
Moment of Inertia (I), and Section Modulus (S) need not
hold any values for the program functions to still return
results for reactions and moments.
Output Displays:
Output Displays are provided for:
R1[lb], R2[lb], V1[lb], V2[lb], Vx[lb], M1[in-lb], M2[in-lb],
Mmax[in-lb], Mx[in-lb], DefMax[in], Defx[in], DefCL[in], StrMax[psi]
As with edit controls, some output displays are inactive in context
with the selected beam. For example, a cantilever beam will display
reactions for a single end (R1,V1) only.
All forces and reactions act in the directions shown. Output signs
follow Roark conventions, i.e., V upward is positive, M upward is
positive, and Defl upward is positive.
Location points for beam maximum shear, maximum moment, and maximum
deflection are shown along with the beam curves on the e_bfw main
window. The beam curves themselves are representative of the selected
loading case and are for reference only.
At the present time, deflections for uniformly loaded-partial span
simply supported or fixed end beams are only returned for beams
1000.0" (83'-4") long or shorter.
Dialog Controls:
There are 4 pushbutton controls for the dialog box:
[Close] - Closes the dialog box.
[Calc] - Forces a calculation/re-calculation of program outputs.
[Clear] - Clears (0's) all active edit controls and all outputs.
[StoPrnt] - Saves to memory all current inputs and outputs.
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Printer Operation:
Description:
Printing operations are directed by Windows Print Manager using
Windows "default" printer.
E_bfw was originally written for Windows 3.0 and printing commands
sent to Print Manager used Windows System font for text information.
This is the font Windows uses for displaying text in caption bars,
menus, etc. Transfer of the bitmap images requires the printer be
capable of bit-block transfer (BitBlt and/or StretchBlt) operations.
At the present time e_bfw does not display a "Cancel Printout" box
during printing operations. If necessary, printing can be halted
by pausing operations from within Print Manager, and closing Print
Manager's window.
Controls:
As noted before, the e_bfw dialog box StoPrnt button is used to
store data for later printout. Data for 1 to 5 dialog boxes (beams)
are saved in the form of a printer "queue".
Two menu choices are available through the e_bfw main window Printer
pull-down menu. "Start Printer" will send the printer queue
(1 to 5 beams) to Print Manager. "Clear Printer" will clear the
queue and dump all existing data. Any data left in the queue when
the program is terminated are lost.
Note:
E_bfw uses screen capture to save the beam schematic, curves, and
maximum shear/moment/deflection location information for the printer.
Because of this, any window (including the e_bfw dialog box) overlaying
some or all of this information at the time that the StoPrnt button
is pushed will "hide" that region of the image from the printer.
Prior to using the StoPrnt button, the e_bfw dialog box or any other
nearby windows should be positioned clear of the noted region.
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E_BFW REGISTRATION FORM
REGISTRATION FEE: $15.00
MAIL TO:
ANDREW N. HALLAHAN
c/o HERR-VOSS CORP.
130 MAIN ST.
P.O. BOX AB
CALLERY, PA. 16024
NAME: ______________________________
COMPANY: ______________________________
ADDRESS: ______________________________
CITY: ______________________________
STATE: ______________________________
ZIP: ___________
COMMENTS/SUGGESTIONS:
______________________________
______________________________
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