scholarly journals Learning Statics by Visualizing Forces on the Example of a Physical Model of a Truss

Buildings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 395
Author(s):  
Kajetan Sadowski ◽  
Szymon Jankowski
Keyword(s):  
Physical Model ◽  
Main Part ◽  
Questionnaire Study ◽  
Structural Systems ◽  
Construction Work ◽  
Design Elements ◽  
Graphic Statics ◽  
Truss Model ◽  
Internal Forces ◽  
In The Beginning

The article presents a new didactic tool helping in teaching the structures of students of the Faculty of Architecture. It is an attempt to solve the problem related to the difficulties in teaching structural systems among students of architecture. In the beginning, examples of Graphic-Statics tools supporting an intuitive understanding of the construction work are presented. Then a physical model of the truss was implemented, which responsively presents the values of internal forces using the colors of the luminous bars. The main part of the article describes the design elements of the truss model and presents how it works. Then, the influence of the model on the education of architecture students was checked by means of a questionnaire study. The results showed the great educational usefulness of the proposed solution.

scholarly journals Basic Concepts of Structural Design for Architecture Students

2021 ◽  
Author(s):  
Anahita Khodadadi ◽  
Keyword(s):  
Material Properties ◽  
Structural Design ◽  
Structural Systems ◽  
Structural Elements ◽  
Math Problem Solving ◽  
Vector Addition ◽  
Rules Of Thumb ◽  
Different Types ◽  
Internal Forces ◽  
Basic Concepts

This book aims to narrate fundamental concepts of structural design to architecture students such that they have minimum involvement with math problem-solving. Within this book, students learn about different types of loads, forces and vector addition, the concept of equilibrium, internal forces, geometrical and material properties of structural elements, and rules of thumb for estimating the proportion of some structural systems such as catenary cables and arches, trusses, and frame structures.

A control algorithm for nonlinear offshore structural dynamical systems

2015 ◽  
Vol 471 (2184) ◽  
pp. 20150605 ◽  
Author(s):  
R. Manikandan ◽  
Nilanjan Saha
Keyword(s):  
Control Algorithm ◽  
Control Mechanism ◽  
Full Rank ◽  
Control Law ◽  
Structural Systems ◽  
Environmental Loads ◽  
State Dependent ◽  
Generalized Displacements ◽  
Internal Forces ◽  
Nonlinear Motions

A reasonable knowledge about the response of nonlinear offshore structural systems under environmental loads is necessary but challenging. This is due to the coupling of internal forces along with external excitations. In this paper, a mathematical model of nonlinear offshore systems is studied with the intention of keeping the response close to the desired one. This is achieved using a novel sub-optimal control mechanism derived from nonlinear quadratic regulator (NQR) theory. Herein, two linearized functions of nonlinear motions—displacement and velocity—are introduced such that the parametrization of the state-dependent system matrices is obtained. By doing so, the system becomes conditioned only on the present state and therefore one needs to solve only an algebraic state-dependent Riccati problem. This results in a control law which may either be partial or full rank for the dynamical system depending on measurable states. The performance of the controller is compared with conventional NQR. The performance of the proposed control strategy is illustrated through a range of models of nonlinear offshore problems. The motions (generalized displacements and velocities) show that the proposed controller was not only able to restrict the undesirable behaviour but also provide means of shaping the transient performance.

scholarly journals Specific horticulture therapy guidelines in the landscaping of Cluj-Napoca hospital facilities – improving mental and behavioural healthcare

2017 ◽  
Vol 9 (1) ◽  
pp. 55-62
Author(s):  
Timea Hitter ◽  
Maria Cantor ◽  
Erzsebet Buta
Keyword(s):  
Landscape Architecture ◽  
Ornamental Plants ◽  
Well Being ◽  
Healthcare Facility ◽  
Design Elements ◽  
Case Study Analysis ◽  
Beneficial Effects ◽  
Point Of Interest ◽  
Horticulture Therapy ◽  
In The Beginning

Abstract In the beginning, nature was an irreplaceable environment for humans. The concept of horticulture therapy (HT) denotes the use of ornamental plants to improve people’s health based on the connection between landscape architecture principles, design elements, and guidelines in healthcare facility gardens. In HT, people can improve and maintain health; so, gardens must provide only beneficial effects for users (patient, family, staff), testing design elements, which can be a scroll direction in garden, point of interest, connection with nature. This paper presents a case study analysis of the current landscape architecture standpoint: one of the Cluj-Napoca clinics, where HT can improve patients’ well-being.

scholarly journals Calculation and Analysis of Truss Internal Force Based on Beam Element

2022 ◽  
Vol 2148 (1) ◽  
pp. 012041
Author(s):  
Yao Zhang ◽  
Jun Dong ◽  
Guohua Li ◽  
Xiufang Wang
Keyword(s):  
Reference Value ◽  
Order Effect ◽  
Internal Force ◽  
Truss Structures ◽  
Force Analysis ◽  
Angular Deformation ◽  
Truss Model ◽  
Internal Forces ◽  
Almost All ◽  
The Ideal

Abstract For plane truss structure, starting from the analysis of ideal truss model, the influence of tangential deformation and angular deformation on the secondary internal force of the truss is fully considered through Python program. It is obtained through analysis that: in the ideal truss model, the Pδ second-order effect causes the member to produce tangential deformation and angular deformation, resulting in secondary internal forces. Numerical analysis shows that due to the influence of secondary internal force, the axial force error of ideal truss model can reach 19.731% and the secondary shear force is almost all the members of the truss, and the secondary moment only appears at the support. The research results have important reference value for the engineering design and high-precision internal force analysis of truss structures.

Some Results From Geotechnical Research on Bentonite

2001 ◽  
Author(s):  
Jaroslav Pacovsky ◽  
Radek Travnicek ◽  
Radek Vasicek
Keyword(s):  
Thermal Properties ◽  
Radioactive Waste ◽  
Physical Model ◽  
Main Part ◽  
Physical Models ◽  
Laboratory Research ◽  
Research Project ◽  
Technical Properties ◽  
High Level ◽  
Natural Barrier

Abstract A solution of safe isolation of radioactive waste represents a multidisciplinary problem. The waste isolation is to be provided by a multi-barrier system of an underground repository based on a system of several barriers. The system will consist of a container with high level radioactive wastes itself, an engineering barrier — currently intended to be based on ‘bentonites’ — and natural barrier formed with a suitable rock environment. Each of those barriers alone should prevent spreading of hazardous radionuclides from the container to the biosphere. In its main part, this paper deals with laboratory research of some most important geotechnical requirements for the engineering barrier, assumedly based on bentonites materials. The group of tested properties contains: • Hydrophysical properties - permeability, swelling ability, Atterberg’s consistency limits • Physico-technical properties - thermal properties • Rheology Creation of mathematical and physical models forms an independent part of the complex research project for materials of the geotechnical part of the engineering barrier. In the conclusion a short consideration on a prepared physical model of container has been made.

scholarly journals The discourse about immigrants. Argumentation strategies in Polish weekly magazines

2016 ◽  
pp. 59-80 ◽  
Author(s):  
Marcin Kotras
Keyword(s):  
Main Part ◽  
Short Description ◽  
Social Representation ◽  
System Transformation ◽  
Social Cleavages ◽  
Research Outcomes ◽  
Different Types ◽  
In The Beginning ◽  
Immigration Issue

The article deals with the problem of different argumentation strategies inside the discourse about immigrants. In the beginning there is a short description of immigration phenomena in Poland. The next section explains the main methodological assumptions (social representation, framing) and basic analytical categories applied in researches presented in this paper. The main part of the article concerns the research outcomes. They concentrates on different types of argumentation strategies in III RP and IV RP weekly magazines. Final results show the contradictions between two types of narrations about the immigrants and about expected crisis solutions. In the last segment of the article it is expressed that the immigration issue is one of the factors in the process of social cleavages sustain, especially when it comes to the attitude towards modernization and system transformation.

scholarly journals Briefbeförderung des Ordens in Livland. Mit vorläufigen statistischen Bewertung

2021 ◽  
Vol 26 ◽  
pp. 73-90
Author(s):  
Juhan Kreem
Keyword(s):  
Statistical Analysis ◽  
Main Part ◽  
Average Speed ◽  
The Road ◽  
15Th Century ◽  
Delivery Routes ◽  
On The Road ◽  
In The Beginning ◽  
Calculated Average ◽  
Scarce Data

Delivery of Letters in the Teutonic Order in Livonia. With a preliminary statistical analysisThis contribution is on the organization and efficiency of the delivery of letters in the Teutonic Order in Livonia. Firstly, the scarce data on couriers is presented. Main part of the contribution is discussing the phenomenon of registration of time (hour) and place in some of the stations on the delivery routes of letters. This method, used extensively also in Prussia, was most likely introduced in Livonia in the beginning of the 15th century. It was used in case of most urgent letters and was first of all meant to monitor the efficiency of delivery. The majority of the places of registration of time are in the territory of the Order, but there are also some exceptions, when this was done in episcopal castles or manors. High number of letters of the Masters of the Teutonic Order in Tallinn City Archives is also allowing some preliminary statistical analysis, how the space and time was mastered on the route Riga-Wenden-Reval. It appears, that although the letters were ordered to be carried day and night, the calculated average speed is so low, that there were obviously made also some stops for rest on the road.

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