A railroad tie (or sleeper) is subjected to two rail loads, each of magnitude P = 177 kN, acting as shown in the figure. a L 9 -a- The reaction q of the ballast is assumed to be uniformly distributed over the length of the tie, which has cross-sectional dimensions b = 300 mm and h = 250 mm. Calculate the maximum bending stress max (in MPa) in the tie due to the loads P, assuming the distance L = 1,500 mm and the overhang length a = 495 mm. (Enter the magnitude.) MPa

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
icon
Related questions
Question
### Problem Description:

A railroad tie (or sleeper) is subjected to two rail loads, each of magnitude \( P = 177 \, \text{kN} \), acting as shown in the figure.

**Diagram Explanation:**

The diagram consists of a horizontal beam (representing the railroad tie) with two downward forces \( P \) at equal distances \( a \) from the edges. Beneath the beam, arrows pointing upward represent the uniformly distributed reaction \( q \) of the ballast. 

The cross-section of the beam is shown as a rectangle with width \( b \) and height \( h \).

### Given Data:

- **Load, \( P \):** 177 kN
- **Cross-sectional Width, \( b \):** 300 mm
- **Cross-sectional Height, \( h \):** 250 mm
- **Distance Between Loads, \( L \):** 1500 mm
- **Overhang Length, \( a \):** 495 mm
- **Uniformly Distributed Reaction, \( q \):** Assumed to be uniformly distributed over the length of the tie.

### Problem Objective:

Calculate the maximum bending stress \( \sigma_{\text{max}} \) (in MPa) in the tie due to the loads \( P \).

### Solution:

Enter the calculated maximum bending stress \( \sigma_{\text{max}} \) based on the provided parameters.

\[ \sigma_{\text{max}} = \, \text{______ MPa} \]
Transcribed Image Text:### Problem Description: A railroad tie (or sleeper) is subjected to two rail loads, each of magnitude \( P = 177 \, \text{kN} \), acting as shown in the figure. **Diagram Explanation:** The diagram consists of a horizontal beam (representing the railroad tie) with two downward forces \( P \) at equal distances \( a \) from the edges. Beneath the beam, arrows pointing upward represent the uniformly distributed reaction \( q \) of the ballast. The cross-section of the beam is shown as a rectangle with width \( b \) and height \( h \). ### Given Data: - **Load, \( P \):** 177 kN - **Cross-sectional Width, \( b \):** 300 mm - **Cross-sectional Height, \( h \):** 250 mm - **Distance Between Loads, \( L \):** 1500 mm - **Overhang Length, \( a \):** 495 mm - **Uniformly Distributed Reaction, \( q \):** Assumed to be uniformly distributed over the length of the tie. ### Problem Objective: Calculate the maximum bending stress \( \sigma_{\text{max}} \) (in MPa) in the tie due to the loads \( P \). ### Solution: Enter the calculated maximum bending stress \( \sigma_{\text{max}} \) based on the provided parameters. \[ \sigma_{\text{max}} = \, \text{______ MPa} \]
Expert Solution
steps

Step by step

Solved in 4 steps with 3 images

Blurred answer
Knowledge Booster
Design of Permanent Joints
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY