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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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- *
- *
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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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- *
- *
- *
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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.
-
- *
- *
- *
- *
- *
- *
-
- 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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