Search results
The molecular weight distribution (MWD) is conveniently characterized by either the number N(n) or weight W(n) of chains with n repeating units (e.g., a chain with molecular weight M = nm0 with m0 the molar weight of a repeating unit). The normalized functions — N (n) = N(n)/ΣN(n) (1) — N (n) = W(n)/ΣW(n)
- 73KB
- 20
Most real-world loads are distributed, including the weight of building materials and the force of wind, water, or earth pushing on a surface. Pressure, load, weight density and stress are all names commonly used for distributed loads.
If Mw is quoted for a molecular weight distribution, there is an equal weight of molecules on either side of Mw in the distribution. Higher average molecular weights: Mz, Mz+1. In general, a series of average molecular weights can be defined by the equation: M = SNiMn + 1.
- 78KB
- 4
Most real-world loads are distributed, including the weight of building materials and the force of wind, water, or earth pushing on a surface. Pressure, load, weight density and stress are all names commonly used for distributed loads.
- Definition – Uniformly Distributed Load
- Visualization of Uniformly Distributed Loads
- Values and Units
- Real-World Examples of UDL
- Transformation of Area Load to Line Load
- Conclusion
In general, there are 1. uniformly distributed lineloads and 2. uniformly distributed arealoads Examples of this load would be snow, wind, live or dead load. But an image explains it much better than words. Let’s have a look. ⬇️⬇️
The uniformly distributed load is represented as arrows of the same length, and the start and endpoints of the arrows are connected to each other. The picture below shows a uniformly distributed line load. This connection is important. If there wasn’t any horizontal lines, the arrows would represent point loads. The picture below shows a uniformly ...
Uniformly distributed loads have values and units, and based on these, the internal forcesof the structural element are calculated. Once the internal forces are known, the structural element can be designed (cross-sectional dimensions are found). The unit of the UDL is kN/m2 (kilonewton per square meter) for area loads and kN/m(kilonewton per meter...
UDL’s can come from a variety of different load types, such as: 1. Snow load 2. Wind load 3. Dead load 4. Live load 5. Earth pressure 6. Water pressure We have written an extensive article about loads on buildings, where we go into detail with every load type. So check that out if you want to learn more. Now, let’s look at some practical examples.
Let’s run through the example where a UDL area load of 2 kN/m2is applied to a slab. The slab is supported by 2 beams which have a distance of 5 m. To calculate the UDL line load that you can apply on 1 of the beams, we multiply the area load with half of the distance of the 2 beams. 2kNm2⋅5m2=5kNm
Now, that you got an understanding of uniformly distributed loads, you can learn about the other loads that act on beams. Once you are confident with the different types of loads, you can calculate the reaction and internal forces. Then, finally, structural elements can be designed with different materials based on the internal forces. Check out ou...
Molar Mass Distribution refers to the distribution of different molar masses within a polymer sample, indicating the frequencies of particular molar masses present. It is described using differential and cumulative curves, providing insights into the composition and properties of the polymer.
People also ask
What is a molecular weight distribution?
What is a uniformly distributed load?
What if Mn is quoted for a molecular weight distribution?
How do you calculate molecular weight distribution?
What is the most useful distribution function for describing molecular weight distribution?
How do you find the equivalent point force for a distributed load?
Nov 1, 1996 · A ratio of the molecular weight averages, known as the polydispersity index (heterogeneity ratio, dispersion ratio, nonuniformity coefficient), defined by the expression r __ Xw __ *Vlw ~ xa~ M (42) is commonly used for description of the polymer MWD.
