Preferred Language
Articles
/
4eb6i50BmraWrQ4drlns
Finite-element guided drilled-hole placement and fillet geometry effects on the structural and dynamic performance of spur gears
...Show More Authors

In this research, a detailed finite-element (FE) analysis of the combined influence of the drilled-hole position, the shape of the hole, and the fillet design on the structural and dynamic performance of spur gears is investigated. ANSYS R16.2 was used to create a three-dimensional numerical model that can be used to assess the bending stress distribution and vibration response under realistic loading conditions. A trochoidal fillet and four circular fillet radii (0.5, 1.0, 1.5 and 2.0 mm) were studied to determine their effect on the stress concentration behavior. FE-guided hole-suggestion process was introduced which is an automated process in which low-stress zones to be cut away are identified so as to allow systematic recommendation of optimal locations, orientations and size of holes without any empirical relation. It was found that root stress decreased dramatically as fillet radius was increased, and 2 mm fillet had the minimum bending stress of all circular arrangements. The baseline configuration (Rf = 0.5 mm, without holes) exhibited a maximum bending stress of 69.45 MPa, whereas increasing the fillet radius to 2.0 mm resulted in a stress reduction of approximately 35%. The trochoidal fillet provided less stress gradients and a larger zone of low stress surrounding the tooth root. The holes proposed by FE were further incorporated, which increased structural performance. Hole size out of the chosen geometric parameters was statistically most impactful on bending stress and dynamic response, which ANOVA proved to be accurate (p < 0.001). The holes in the top the most desirable performance were medium-size (≈2.0–2.4 mm) drilled horizontally, which minimized bending stress by about 46%–50% relative to the baseline gear and ensured very low peak dynamic displacement (∼3.4 × 10 −5  m at approximately 73 Hz). Structural integrity is well enhanced by optimizing fillet radius and drilled holes sizes, directions, and locations regarding the strength and dynamic stability. The proposed methodology offers a reliable and scientifically grounded framework for gear modification with strong potential for integration into advanced gear design and light weighting applications.

Crossref
View Publication
Publication Date
Thu Dec 31 2009
Journal Name
The Iraqi Journal Of Veterinary Medicine
Possible beneficial effects of amlodipine, lisinopril, and their Combination on lipid profile in hypertensive patients
...Show More Authors

It is well known that monotherapy does not provide therapeutic response in all hypertensive. Somepatients show an excellent response, while in others there is a poor response. Combinationantihypertensive therapy is administered when blood pressure is inadequately controlled bymonotherapy to achieve a balanced and additive antihypertensive effect with minimum adverse effects.Both angiotensin converting enzyme (ACE) inhibitors and dihydropyridine type of calcium antagonistsare well established and widely used in monotherapy. An understanding of differences in themechanism of action of these agents allows a logical approach for the use of these agents as acombination therapy. This study was designed to evaluate the possible beneficial

... Show More
Crossref
Publication Date
Sun Jun 02 2013
Journal Name
Baghdad Science Journal
Effects of Lead on Hemopoeitic and Iron Status in Iraqi Workers at Lead Batteries Factory
...Show More Authors

The present study aimed to evaluate the effect of lead exposure on hemopoetic system (through the index delta-Aminolevulinic acid dehydratase ?-ALAD activity & hemoglobin concentration (Hb) ) and on iron status (levels of iron Fe, Ferritin Fr, Total iron binding capacity TIBC, percentage of transferine saturation TF%) in 44 Iraqi worker at lead batteries factory. Workers divided into two groups: smokers(n=21) mean aged (37.33±4.82 year)and non smokers(n=23) mean aged(40.78±7.89 year) and 45 healthy subjects mean aged (33.97±5.08)as control group . Activity of ?-ALAD ratio shows significant decrease (p ? 0.05) ,while Hb and hematocrit Hct were non significant (p ? 0.05) in smoker workers more than non smoker as compared to control . The r

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Jul 22 2026
Journal Name
Journal Of Administration And Economics
Using dynamic Fuzzy programming to control the storage of some Department of Commerce stores
...Show More Authors

In this research was to use the method of classic dynamic programming (CDP) and the method of fuzzy dynamic programming (FDP) to controlling the inventory in N periods and only one substance ,in order to minimize the total cost and determining the required quantity in warehouse rusafa principal of the ministry of commerce . A comparison was made between the two techniques، We found that the value of fuzzy total cost is less than that the value of classic total cost

View Publication
Publication Date
Thu Jun 01 2017
Journal Name
Journal Of The College Of Languages (jcl)
The Effect of Teaching English Vocabulary Learning Strategies on Iraqi Intermediate School Students’ Vocabulary Performance and Reading Comprehension
...Show More Authors

The present study aims at empirically investigating the effect of vocabulary learning strategies on Iraqi intermediate school students’vocabulary performance and reading comprehension. The population of the present study includes all the 1st year male students of  Al-Wark’a intermediate  school of Al-Risafa 1/ General  Directorate of Education for the first course of the academic year (2015-2016). To achieve the aim of the study ,a pre-test and post-test after (5) weeks of experiment are administrated .The sample of the present study consists of (100) subjects :(50) students as an experimental group and other (50) students as  a control group . The subj

... Show More
View Publication Preview PDF
Publication Date
Mon Sep 30 2019
Journal Name
College Of Islamic Sciences
Structural and contextual dimensions For the connection of static T feminization An analytical study
...Show More Authors

After looking at the books of the first two grammarians, may God have mercy on them and reward them for what they have provided us with the rules of service to the Book of God and service to Arabic, we must highlight some of the things that the grammarians wanted to clarify, which did not come out of what they proved, but we are working on the statement of the issuance of the passport Provisions from the syntactic industry, and whether it is intended to prove a rule is not very added to the statement of speech, and we know that language, any language was the function of understanding; therefore they said: (speech is a useful word that indicates the benefit improves silence on them), and this concept between Grammatical controls and conte

... Show More
View Publication Preview PDF
Publication Date
Wed Jul 22 2026
Journal Name
Al.qadisiya Journal For The Sciences Of Physical Education
The Impact of weighted gloves on developing the effectiveness of performance and increasing the number of punches for youth boxers
...Show More Authors

View Publication Preview PDF
Publication Date
Tue Oct 01 2019
Journal Name
Poultry Science
Effect of using ionized water on some productive and physiological performance of Japanese quails
...Show More Authors

This study was conducted to explore the effects of using ionized water on the productive and physiological performance of Japanese quails (Coturnix japonica). Our study was conducted at a private farm from 20th April, 2016 to 13th July, 2016 (84 d). One hundred 42-day-old Japanese quail chicks were used, divided randomly into 5 groups with 4 replicates. Treatments consisted in a control group (T1 - normal water:), alkaline (T2 - pH 8 and T3 - pH 9), and acidic water (T4 - pH 6 and T5 - pH 5). All birds were fed a balanced diet of energy and protein. The egg production ratio, egg weight, cumulative number of eggs, egg mass, feed conversion ratio, productivity per hen per week, and effects on plasma lipids, uric acid, glucose, calcium, and ph

... Show More
View Publication
Scopus (7)
Crossref (4)
Scopus Clarivate Crossref
Publication Date
Mon Jan 12 2026
Journal Name
Infrastructures
Behaviour of Shear Stress Distribution in Steel Sections Under Static and Dynamic Loads
...Show More Authors

Shear lag is the phenomenon that occurs when a supported slender member undergoes deformation from lateral loading, causing in-plane non-uniform distribution of stresses that results in reducing the member’s minimum strength capacity. This paper investigates the behaviour of shear distribution in steel I-section and box girders when subjected to both static and impact loadings. Three-dimensional finite element analysis models were prepared in Strand7 and validated against experimental results providing a basis for further comparison research into shear lagging effects. A parametric study was conducted comparing the effects of impact loading through certain specified velocities at the midspan of restrained ends. It provided new ins

... Show More
View Publication
Scopus Crossref
Publication Date
Wed Mar 05 2014
Journal Name
Journal Of Engineering
Estimation of Some Mechanical Soil Properties from Static and Dynamic Plate Load Tests ‫
...Show More Authors

Publication Date
Sun Oct 02 2022
Journal Name
Engineering, Technology & Applied Science Research
Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP
...Show More Authors

In this study, three strengthening techniques, near-surface mounted NSM-CRFP, NSM-CFRP with externally bonding EB-CFRP, and hybrid CFRP with circularization were studied to increase the seismic performance of existing RC slender columns under lateral loads. Experimentally, 1:3 scale RC models were studied and subjected to both lateral static load and seismic excitation. In the dynamic test, a model was subjected to El Centro 1940 NS earthquake excitation by using a shaking table. According to the test results, the strengthening techniques showed a significant increase in load carrying capacity, of about 86.6%, and 46.6%, for circularization and NSM-CFRP respectively, of the reference unstrengthened columns. On the other hand, column

... Show More
View Publication
Crossref (10)
Crossref